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* ''ComicBook/DogManDavPilkey'': In the eighth book of the series, Grampa [[InstantSedation puts both Petey and Li'l Petey to sleep]] via sleep gas, after they visit him in custody. He then steals Petey's identity and kidnaps Li'l Petey in the latter's sleep.



* In ''Film/TheHungerGamesMockingjayPart1'', the rebel team [[spoiler:sent to rescue the Victors]] uses sleeping gas bombs to clear areas before they enter. [[spoiler:Peeta gets knocked out by the gas as well, and comes to in the hospital at District 13]].
* ''Film/{{Lou|2022}}''. The kidnapper removes the doorknob and inserts a tube that sprays halothane into the child's bedroom.

to:

* In ''Film/TheHungerGamesMockingjayPart1'', the rebel team [[spoiler:sent to rescue the Victors]] uses sleeping gas bombs to clear areas before they enter. [[spoiler:Peeta gets knocked out by the gas as well, and comes to in the hospital at District 13]].
13.]]
* ''Film/{{Lou|2022}}''. ''Film/Lou2022'': The kidnapper removes the doorknob and inserts a tube that sprays halothane into the child's bedroom.



* ''Literature/DocSavage'' used anesthetic gas grenades. Somewhat justified in that Doc was supposed to have specifically invented these.
** In ''Fear Cay'', one of the ''Literature/DocSavage'' novels, the bad guys try to capture Doc with Knockout Gas dispensed from a rigged wallet left on the sidewalk where he would find it. It doesn't work, because of his superior ability to smell ([[FridgeLogic he somehow smelled it before he breathed it]]) and (as with [[ComicBook/TheIncredibleHulk the Hulk]]) his ability to hold his breath for much longer than normal. In this case it was ''not'' visible.
* In the eighth book of the ''[[ComicBook/DavPilkeyDogMan Dog Man]]'' series, Grampa [[InstantSedation puts both Petey and Li'l Petey to sleep]] via sleep gas, after they visit him in custody. He then steals Petey's identity and kidnaps Li'l Petey in the latter's sleep.

to:

* ''Literature/DocSavage'' Zig-zagged in ''Literature/{{Artemis}}''; the [[spoiler:meltdown of the smelter]] produces chloroform and [[spoiler:releases it into Artemis' air supply, knocking everyone out, but it's not harmless and our protagonists have to flush the air before it kills them]].
* ''Literature/ButlerParker'': Sleeping gas is one of the staple weapons Parker uses. Occasionally, though rarely, he's also at the receiving end of a dose -- in which case one of his ballpoint pens containing a breathing mask often comes in handy.
* Used in ''The Commissar'' by Creator/SvenHassel to immobilize a Soviet prison camp for TheCaper. It's pointed out the gas can only be
used in confined spaces "otherwise the whole German army would have been put to sleep long ago." Several people start waking up early and have to be killed by the PsychoForHire ex-NKVD man who's helping them.
* ''Literature/DocSavage'':
** The Doc uses
anesthetic gas grenades. Somewhat justified in that Doc he was supposed to have specifically invented these.
** In ''Fear Cay'', one of the ''Literature/DocSavage'' novels, the bad guys try to capture Doc with Knockout Gas dispensed from a rigged wallet left on the sidewalk where he would find it. It doesn't work, because of his superior ability to smell ([[FridgeLogic he somehow smelled it before he breathed it]]) and (as with [[ComicBook/TheIncredibleHulk the Hulk]]) his ability to hold his breath for much longer than normal. In this case it was ''not'' visible.
* In the eighth book of the ''[[ComicBook/DavPilkeyDogMan Dog Man]]'' series, Grampa [[InstantSedation puts both Petey and Li'l Petey to sleep]] via sleep gas, after they visit him in custody. He then steals Petey's identity and kidnaps Li'l Petey in the latter's sleep.
visible.



* ''Literature/{{Gor}}'': In ''Fighting Slave of Gor'', Jason Marshall and his date Beverly are taken out by knockout gas in the backseat of a specially prepared taxi. They were only after her, but he forced his way into the cab when she was trying to end the date.
* In ''Literature/LittleGreenMen'', the "aliens" use a gas named sevoflurane to anesthetize their abductees, usually with added ammonia and cinnamon scent.
* ''Literature/TheMachineriesOfEmpire'': [[BigBad Kujen]]'s flagship is rigged to deploy knockout gas everywhere except his hermetically sealed private suite in an emergency. Though it's ostensibly nonlethal, it needs an antidote and still causes lasting ill effects; several staff die from accidents like drowning in their baths; and [[BeleagueredAssistant Dhanneth]] is hospitalized with a serious allergic reaction.
* In Creator/LarryNiven and Creator/JerryPournelle's ''Oath of Fealty'', The Todos Santos arcology uses knockout gas as part of its internal security system.



* ''Fighting Slave of Literature/{{Gor}}'': Jason Marshall and his date Beverly are taken out by knockout gas in the backseat of a specially-prepared taxi. They were only after her, but he forced his way into the cab when she was trying to end the date.
* In Creator/HarryHarrison's ''Literature/TheStainlessSteelRat'' series, both local law enforcement and Slippery Jim use Knock-out Gas with great abandon, although slightly more realistically than is usual in fiction. Jim makes sure to use nasal filters or a mask to avoid breathing it in himself, it's usually invisible rather than brightly colored, and there are numerous different types, with different effects, speed of action, duration and after-effects.
* In Creator/LarryNiven and Jerry Pournelle's ''Oath of Fealty'', The Todos Santos arcology uses knockout gas as part of its internal security system.
* In ''Literature/LittleGreenMen'', the "aliens" use a gas named sevoflurane to anesthetize their abductees, usually with added ammonia and cinnamon scent.
* Creator/AnneMcCaffrey's ''Pegasus'' series has Law Enforcement & Order use 'anesthesine gas'.
* Sleeping gas was one of the staple weapons ''Literature/ButlerParker'' used. Occasionally, though rarely, he also was at the receiving end of a dose - in which case often one of his ballpoint pens containing a breathing mask came in handy.
* Used in ''The Commissar'' by Creator/SvenHassel to immobilize a Soviet prison camp for TheCaper. It's pointed out the gas can only be used in confined spaces "otherwise the whole German army would have been put to sleep long ago." Several people start waking up early and have to be killed by the PsychoForHire ex-NKVD man who's helping them.
* Zig-zagged in ''Literature/{{Artemis}}'', the [[spoiler: meltdown of the smelter]] produces chloroform and [[spoiler: releases it into Artemis' air supply, knocking everyone out. But, it's not harmless and our protagonists have to flush the air before it kills them.]]
* In Creator/JohnChristopher's novel ''Year of the Comet'', the two protagonists get entangled in power-plays between the mega-corporations that rule their [[AfterTheEnd post-World War III world]], leading to them twice getting gassed and carted off to new locations. Just to add some variety, at another point they are also [[TapOnTheHead clubbed unconscious]].
* ''Literature/TheMachineriesOfEmpire'': [[BigBad Kujen]]'s flagship is rigged to deploy knockout gas everywhere except his hermetically sealed private suite in an emergency. Though it's ostensibly nonlethal, it needs an antidote and still causes lasting ill effects; several staff die from accidents like drowning in their baths; and [[BeleagueredAssistant Dhanneth]] is hospitalized with a serious allergic reaction.



** In ''The City Who Fought'', a SpacePirate being gassed starts to feel woozy and realizes what must be happening, so he kills himself rather than be captured while unconscious.

to:

** In ''The City Who Fought'', a SpacePirate {{Space Pirate|s}} being gassed starts to feel woozy and realizes what must be happening, so he kills himself rather than be captured while unconscious.unconscious.
* In ''Literature/TheStainlessSteelRat'', both local law enforcement and Slippery Jim use Knock-out Gas with great abandon, although slightly more realistically than is usual in fiction. Jim makes sure to use nasal filters or a mask to avoid breathing it in himself, it's usually invisible rather than brightly colored, and there are numerous different types, with different effects, speed of action, duration and after-effects.
* ''Literature/ToRidePegasus'' has Law Enforcement and Order use 'anesthesine gas'.
* In Creator/JohnChristopher's novel ''Year of the Comet'', the two protagonists get entangled in power-plays between the mega-corporations that rule their [[AfterTheEnd post-World War III world]], leading to them twice getting gassed and carted off to new locations. Just to add some variety, at another point they are also [[TapOnTheHead clubbed unconscious]].

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* ''Film/CommandoCodySkyMarshalOfTheUniverse''. The villains use a spray to knock out guards when sneaking into Cody's office or rocketship. It's pointed out that the guards will think they fell asleep on duty and therefore wouldn't admit that anything was wrong.

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* ''Film/CommandoCodySkyMarshalOfTheUniverse''. ''Film/CommandoCodySkyMarshalOfTheUniverse''
**
The villains use a spray to knock out guards when sneaking into Cody's office or rocketship. It's pointed out that the guards will think they fell asleep on duty and therefore wouldn't admit that anything was wrong.wrong.
** For much of the FilmSerial there are a row of gas grenades lined up in the cabin of Cody's rocketship. The ChekhovsGun is finally fired when a FakeDefector uses one to knock out our heroes so their rocketship can be captured.
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The word "victim" doesn't fit here.


In fiction, one of the easiest ways to incapacitate an opponent or group of opponents is to get them in a closed room and pump in Knockout Gas. Some forms of Knockout Gas are an area-effect form of InstantSedation: as soon as the victims breathe it, they cough weakly a few times and then slump to the floor unconscious. Other forms give the victim enough time to lay down comfortably before falling asleep.

Usually delivered as a visible fog, and often [[TechnicolorScience brightly colored]] as well, but invisible gas is also common, particularly in budget-conscious productions. Knockout Gas can be delivered through special vents just for that purpose, or it can be pumped in through the regular ventilation system. As with other forms of sedation, dosage doesn't seem to matter. The effects last just long enough for maximum tension or drama. Recovery tends to be just as fast as the onset, and the victims rarely suffer any lasting effects beyond, perhaps, a mild headache. Nobody ever seems to crack their skull or otherwise get hurt when falling down, either.

to:

In fiction, one of the easiest ways to incapacitate an opponent or group of opponents is to get them in a closed room and pump in Knockout Gas. Some forms of Knockout Gas are an area-effect form of InstantSedation: as soon as the victims breathe recipient breathes it, they cough weakly a few times and then slump to the floor unconscious. Other forms give the victim recipient enough time to lay lie down comfortably before falling asleep.

Usually delivered as a visible fog, and often [[TechnicolorScience brightly colored]] as well, but invisible gas is also common, particularly in budget-conscious productions. Knockout Gas can be delivered through special vents just for that purpose, or it can be pumped in through the regular ventilation system. As with other forms of sedation, dosage doesn't seem to matter. The effects last just long enough for maximum tension or drama. Recovery tends to be just as fast as the onset, and the victims recipients rarely suffer any lasting effects beyond, perhaps, a mild headache. Nobody ever seems to crack their skull or otherwise get hurt when falling down, either.



* ''Manga/SnowWhiteWithTheRedHair'': One of [[spoiler:Touka]]'s concoctions functions this way when tossed onto a fire, he has a version of it that is altered to be more deadly as well though it is possible this is the same concoction in different amounts since the "antidote" that prevents one from passing out dead asleep from the first version still works with it, it just does not prevent the victim from becoming ill and dying. It also takes a bit longer to put those inhaling it to sleep than most examples.

to:

* ''Manga/SnowWhiteWithTheRedHair'': One of [[spoiler:Touka]]'s concoctions functions this way when tossed onto a fire, he has a version of it that is altered to be more deadly as well though it is possible this is the same concoction in different amounts since the "antidote" that prevents one from passing out dead asleep from the first version still works with it, it just does not prevent the victim recipient from becoming ill and dying. It also takes a bit longer to put those inhaling it to sleep than most examples.



* In ''VideoGame/TheLegendOfTianding'', the {{Geisha}} dancer turns out to be a master thief, Kaguya, who reveals herself by dropping a SmokeBomb full of nerve gas knocking out everyone in a room in order to steal a valuable Macguffin item. Unfortunately for ''her'', you're a master thief yourself (of the JustLikeRobinHood variety) who beats her to the punch by pickpocketing Kaguya's intended victim, escaping before her gas affects you. She then challenges you to a duel leading to a difficult boss fight.

to:

* In ''VideoGame/TheLegendOfTianding'', the {{Geisha}} dancer turns out to be a master thief, Kaguya, who reveals herself by dropping a SmokeBomb full of nerve gas knocking out everyone in a room in order to steal a valuable Macguffin item. Unfortunately for ''her'', you're a master thief yourself (of the JustLikeRobinHood variety) who beats her to the punch by pickpocketing Kaguya's intended victim, recipient, escaping before her gas affects you. She then challenges you to a duel leading to a difficult boss fight.



* ''[[WesternAnimation/SheRaPrincessOfPower She-Ra: Princess of Power]]'' once features a scene where villain Hordak sprays one of the heroes with some sleep gas from his [[SwissArmyAppendage Swiss Army Hand]]. The hero gets off an exclamation and keels over. Hordak then comments that he's going to have to have a word with his scientists; the victim shouldn't have had time to say anything before succumbing.

to:

* ''[[WesternAnimation/SheRaPrincessOfPower She-Ra: Princess of Power]]'' once features a scene where villain Hordak sprays one of the heroes with some sleep gas from his [[SwissArmyAppendage Swiss Army Hand]]. The hero gets off an exclamation and keels over. Hordak then comments that he's going to have to have a word with his scientists; the victim recipient shouldn't have had time to say anything before succumbing.
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* ''Film/CommandoCodySkyMarshalOfTheUniverse''. The villains use a spray to knock out guards when sneaking into Cody's office or rocketship. It's pointed out that the guards will think they fell asleep on duty and therefore wouldn't admit that anything was wrong.
Is there an issue? Send a MessageReason:
None


* Brainships in ''Literature/TheShipWho'' books are able to flood their compartments with "sleepygas" to knock out passengers. While it works without issue several times, it takes a few seconds to take effect, so sometimes characters counter it.

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* Brainships in ''Literature/TheShipWho'' books are able to flood their compartments with "sleepygas" to knock out passengers.unruly passengers. One such passenger complains when waking up about the "sleepygas hangover", leaving her with nausea a pounding headache. While it works without issue several times, it takes a few seconds to take effect, so sometimes characters counter it.
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* ''VideoGame/MasterDetectiveArchivesRainCode'': In the later half of the game, [[spoiler:after tricking Yuma and co. into helping him oust [[TheHeavy Yomi Hellsmile]] from power, [[BigBad Makoto Kagutsuchi, CEO of Amaterasu Corporation]], dispenses white sleeping gas in the detective agency after shocking them with footage of the WDO being blown up by a terrorist attack, knocking out the detectives so he can then kidnap them for his plot in the following chapter. The entire sequence is, of course, PlayedForHorror.]]
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* Brainships in ''Literature/TheShipWho'' books are able to flood their compartments with "sleepygas" to knock out passengers. While it works without issue several times, it takes a few seconds to take effect, so sometimes characters counter it.
** In ''[=PartnerShip=]'', Polyon recognizes the signature hiss of release and just leaves the room in time to avoid more than momentary lightheadedness, [[spoiler: knowing that the brainship trying to gas him is too preoccupied with a ComputerVirus to keep the door locked]]. Sev, about to pass through a gas-flooded hallway too long to allow him to hold his breath the entire way, first hyperventilates in clean air so that when he does have to inhale a bit of the gas it doesn't have as strong of an effect.
** In ''The City Who Fought'', a SpacePirate being gassed starts to feel woozy and realizes what must be happening, so he kills himself rather than be captured while unconscious.
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Added example(s)

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* ''Fanfic/ThePlantarFamilyPet'': When Maddie finds a "beast" (Marcy Wu) injured and sick in a cave, she wants to help her. Unfortunately, Marcy has spent weeks being abused by Andrias and the various frogs, newts, and toads in Amphibia, so she isn't about to let Maddie anywhere near her. Maddie then throws a sleeping potion at her, causing her to sleep through the afternoon until midway through the next morning. Played somewhat realistically, as Maddie notes that she has to semi-calculate what dosage to give Marcy and believes that she overdosed her (though the narrative implies Marcy slept so long due to sheer exhaustion).
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* ''Series/{{Believe}}'': Skouras tries to use this (or possibly DeadlyGas, but the fact that he has henchmen in gas masks with guns on hand suggests that the gas itself wouldn't have killed her) on Dani in the finale. She manages to neutralize it with her PsychicPowers, something that even with all of his years studying people like her he didn't think was possible.

to:

* ''Series/{{Believe}}'': ''Series/{{Believe|2014}}'': Skouras tries to use this (or possibly DeadlyGas, but the fact that he has henchmen in gas masks with guns on hand suggests that the gas itself wouldn't have killed her) on Dani in the finale. She manages to neutralize it with her PsychicPowers, something that even with all of his years studying people like her he didn't think was possible.

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Alphabetizing.


* ''Series/TheAquabatsSuperShow'': In the episode "[[Recap/TheAquabatsSuperShowS1E12CobraMan CobraMan!]]", while the team is trapped inside the Battletram by Carl, who forces the team to watch the MC Bat Commander fight the [=CobraMan=], Jimmy the Robot detaches one of his hands and remote controls it so as to access a knockout gas button that, when activated, knocks out Carl and the rest of the team inside (Jimmy, being a robot, isn't affected by the gas), effectively freeing the team from Carl's clutches.
* ''Series/TheBarrier'': A truck secretly transporting a group of children between two locations has its back filled with a gas that puts all its occupants asleep, except for the guard wearing a gas mask.
* A constantly recurring staple of both villains and heroes in ''Series/Batman1966'', most often in the form of colorful Knockout Gas.
** In "The Bookworm Turns", the sleeping gas released by the Bookworm's booby-trapped book renders Robin unconscious in seconds.
** In "While Gotham City Burns", the Bookworm uses a package booby-trapped with sleep gas to render Alfred and Aunt Harriet unconscious so he can steal a book from the Wayne manor library.
** In "Hi Diddle Diddle" and "Smack in the Middle", the Riddler uses an aerosol can of sleeping gas to put Robin to sleep.
** In "The Ring of Wax", The Riddler renders a guard unconscious with gas released from a candle.
** In "The Joker Goes to School", the Joker tampers with a milk machine so that it shackles the Dynamic Duo, then releases knockout gas before they can free themselves.
** Batman himself uses it several times when he has to bring someone to the Batcave. He even has a can of Bat-Awake that can reverse the effects just as quickly.
* ''Series/{{Believe}}'': Skouras tries to use this (or possibly DeadlyGas, but the fact that he has henchmen in gas masks with guns on hand suggests that the gas itself wouldn't have killed her) on Dani in the finale. She manages to neutralize it with her PsychicPowers, something that even with all of his years studying people like her he didn't think was possible.
* ''Series/BlakesSeven'':
** Sona gas is mentioned specifically in the episodes "[[Recap/BlakesSevenS1E7MissionToDestiny Mission to Destiny]]" and "[[Recap/BlakesSevenS2E5PressurePoint Pressure Point]]". Presumably there are other kinds.
** In "[[Recap/BlakesSevenS3E3Volcano Volcano]]", Tarrant and Dayna are walking through a BBCQuarry when aliens on the cliffs above fire a narcotic gas over their heads that drifts down as mist and knocks them out. A concentrated dose from the same weapon is later used as a DeadlyGas to kill someone.
--->'''Tarrant:''' It can't be raining? ''[keels over]''
* In the ''Series/{{Community}}'' episode "[[Recap/CommunityS3E01Biology101 Biology 101]]", a variant of Knockout Gas intended for monkeys ("Chimpan-Zzz" brand) is pumped into the Greendale air vents. It turns out to work on humans too, with the additional side effects of causing hallucinations and references to ''Film/TwoThousandOneASpaceOdyssey''.
* ''Series/Danger5'': Used to knock out Tucker and Jackson in "Diamond Girls" while they guard a secure bank vault.
* ''Series/DoctorWho'': The Master uses this to subdue the Doctor and Jo Grant when they break into his TARDIS in "[[Recap/DoctorWhoS8E4ColonyInSpace Colony in Space]]".
* In one episode of ''Series/DrakeAndJosh'', Megan puts out a canister of knockout gas when the boys keep her up at night with their arguing. She uses another one at the end of the episode when they get into another argument.
* In ''Fleming: The Man Who Would Be Bond'', Creator/IanFleming demonstrates a fountain pen that sprays knockout gas (among other [[ShoePhone gadgets]]) for some visiting top brass. Unfortunately, he does this by gassing his SassySecretary, who is not amused when she wakes up.



* ''Series/ThePrisoner1967''. The sleeping gas used on Number 6 in his apartment in the first episode (and each episode's opening title).
* ''Series/Danger5:'' Used to knock out Tucker and Jackson in "Diamond Girls" while they guard a secure bank vault.
* ''Series/DoctorWho''. The Master uses this to subdue the Doctor and Jo Grant when they break into his TARDIS in "Colony in Space"
* A constantly-recurring staple of both villains and heroes on ''Series/Batman1966'', most often in the form of colorful Knockout Gas.
** "The Bookworm Turns". The sleeping gas released by the Bookworm's booby-trapped book renders Robin unconscious in seconds.
** "While Gotham City Burns". The Bookworm uses a package booby-trapped with sleep gas to render Alfred and Aunt Harriet unconscious so he can steal a book from the Wayne manor library.
** In "Hi Diddle Diddle" and "Smack in the Middle" the Riddler uses an aerosol can of sleeping gas to put Robin to sleep.
** "The Ring of Wax". The Riddler renders a guard unconscious with gas released from a candle.
** In "The Joker Goes To School" the Joker tampers with a milk machine so that it shackles the Dynamic Duo, then releases knockout gas before they can free themselves.
** Batman, himself, used it several times when there was a reason he had to bring someone to the Batcave. He even had a can of Bat Awake that could reverse the effects just as quickly.
* ''Series/SimonAndSimon'' episode "Under the Knife" has A.J. gassed in a hospital room and in danger of unnecessary surgery when the brothers get too close to the truth in a malpractice scam.

to:

* ''Series/ThePrisoner1967''. ''Series/MacGyver1985'': An instantly sedating knockout gas is one of the weapon systems of the attack helicopter in "Honest Abe".
* ''Series/PersonOfInterest'':
** In "[[Recap/PersonOfInterestS03E03 Lady Killer]]", Root escapes from the mental hospital this way, as per the page quote.
** In "[[Recap/PersonOfInterestS03E05 Razgovor]]", Shaw and the VictimOfTheWeek do an [[AirVentPassageway Air-Vent Escape]] in an old apartment building, so TheMafiya thugs chasing them do a field improvised version by puncturing the air conditioning system, causing chlorodifluoromethane to flood into the vents.
* ''Series/ThePrisoner1967'':
The sleeping gas used on Number 6 in his apartment in the first episode (and each episode's opening title).
* ''Series/Danger5:'' Used ''Series/TheProfessionals'': In "Need to knock out Tucker Know", the KGB snatch a DoubleAgent from a VulnerableConvoy, but don't want to invite retaliation by killing British agents, so use stun gas instead. [[spoiler:We later discover the snatch is a BatmanGambit by George Cowley, who is covering his men with a sniper rifle in case the KGB decided to use more lethal means. Bodie and Jackson Doyle weren't in "Diamond Girls" while they guard a secure bank vault.
* ''Series/DoctorWho''. The Master uses this to subdue
on the Doctor and Jo Grant plan, so aren't happy when they break into his TARDIS in "Colony in Space"
regain consciousness.]]
* A constantly-recurring staple of both villains and heroes on ''Series/Batman1966'', most often in the form of colorful Knockout Gas.
** "The Bookworm Turns".
The sleeping gas released by the Bookworm's booby-trapped book renders Robin unconscious in seconds.
** "While Gotham City Burns". The Bookworm uses a package booby-trapped with sleep gas to render Alfred and Aunt Harriet unconscious so he can steal a book from the Wayne manor library.
** In "Hi Diddle Diddle" and "Smack in the Middle" the Riddler uses an aerosol can of sleeping gas to put Robin to sleep.
** "The Ring of Wax". The Riddler renders a guard unconscious with gas released from a candle.
** In "The Joker Goes To School" the Joker tampers with a milk machine so that it shackles the Dynamic Duo, then releases knockout gas before they can free themselves.
** Batman, himself, used it several times when there was a reason he had to bring someone to the Batcave. He even had a can of Bat Awake that could reverse the effects just as quickly.
*
''Series/SimonAndSimon'' episode "Under the Knife" has A.J. gassed in a hospital room and in danger of unnecessary surgery when the brothers get too close to the truth in a malpractice scam.scam.
* In the ''Series/StargateAtlantis'' episode "[[Recap/StargateAtlantisS05E13Inquisition Inquisition]]", Atlantis' first team is taken out by Knockout Gas in a cell, before being moved to another planet through the Stargate so the rest of the expedition can't find them.



** ''Series/StarTrekTheOriginalSeries'' episode "Space Seed". After Khan takes over the Enterprise, Kirk orders that all decks be flooded with Neural Gas, which would render everyone aboard unconscious. That attempt fails, but later the attempt succeeds.

to:

** In the ''Series/StarTrekTheOriginalSeries'' episode "Space Seed". After "[[Recap/StarTrekS1E22SpaceSeed Space Seed]]", after Khan takes over the Enterprise, Kirk orders that all decks be flooded with Neural Gas, which would render everyone aboard unconscious. That attempt fails, but later the attempt succeeds.



* ''Series/TheWildWildWest''
** In the episode "The Night of the Sudden Death", invisible gas pumped in from a gaslight lamp [[AndSomeOtherStuff with an unspecified additive]] is used to fill a very large U.S. Mint set and knock out several people within seconds.

to:

* ''Series/TheWildWildWest''
''Series/TheWildWildWest'':
** In the episode "The "[[Recap/TheWildWildWestS1E4TheNightOfSuddenDeath The Night of the Sudden Death", Death]]", invisible gas pumped in from a gaslight lamp [[AndSomeOtherStuff with an unspecified additive]] is used to fill a very large U.S. Mint set and knock out several people within seconds.



* In the "Biology 101" episode of ''Series/{{Community}}'', a variant of Knockout Gas intended for monkeys ("Chimpan-Zzz" brand) is pumped into the Greendale air vents. It turns out to work on humans too, with the additional side effects of causing hallucinations and references to ''Film/TwoThousandOneASpaceOdyssey''.
* In the ''Series/StargateAtlantis'' episode "Inquisition", Atlantis' first team is taken out by Knockout Gas in a cell, before being moved to another planet through the Stargate so the rest of the expedition can't find them.
* In ''Series/TheAquabatsSuperShow'' episode "Cobraman!", while the team is trapped inside the Battletram by Carl, who forces the team to watch the MC Bat Commander fight the Cobraman, Jimmy the Robot detaches one of his hands and remote controls it so as to access a knockout gas button that, when activated, knocks out Carl and the rest of the team inside (Jimmy, being a robot, isn't affected by the gas), effectively freeing the team from Carl's clutches.
* Skouras tries to use this (or possibly DeadlyGas, but the fact that he had henchmen in gas masks with guns on hand suggests that the gas itself wouldn't have killed her) on Dani in the finale of ''Series/{{Believe}}''. She manages to neutralize it with her PsychicPowers, something that even with all of his years studying people like her he didn't think was possible.
* ''Series/MacGyver1985'': An instantly sedating knockout gas was one of the weapon systems on the attack helicopter in "Honest Abe".
* ''Series/PersonOfInterest''.
** In "Lady Killer", Root escapes from the mental hospital this way, as per the page quote.
** In "Razgovor", Shaw and the VictimOfTheWeek do an AirVentEscape in an old apartment building, so TheMafiya thugs chasing them do a field improvised version by puncturing the air conditioning system, causing chlorodifluoromethane to flood into the vents.
* ''Series/TheProfessionals''. In "Need to Know", the KGB snatch a DoubleAgent from a VulnerableConvoy, but don't want to invite retaliation by killing British agents, so use stun gas instead. [[spoiler:We later discover the snatch is a BatmanGambit by George Cowley, who is covering his men with a sniper rifle in case the KGB decided to use more lethal means. Bodie and Doyle weren't in on the plan, so aren't happy when they regain consciousness.]]
* ''Fleming: The Man Who Would Be Bond''. Creator/IanFleming demonstrates a fountain pen that sprays knockout gas (among other [[ShoePhone gadgets]]) for some visiting top brass. Unfortunately, he does this by gassing his SassySecretary, who is not amused when she wakes up.
* In one episode of ''Series/DrakeAndJosh'', Megan puts out a canister of knockout gas when the boys keep her up at night with their arguing. She uses another one at the end of the episode when they get into another argument.
* Sona gas is mentioned specifically in the ''Series/BlakesSeven'' episodes "Mission to Destiny" and "Pressure Point". Presumably there are other kinds. In "Volcano", Tarrant and Dayna are walking through a BBCQuarry when aliens on the cliffs above fire a narcotic gas over their heads that drifts down as mist and knocks them out. A concentrated dose from the same weapon is later used as a DeadlyGas to kill someone.
-->'''Tarrant:''' It can't be raining? ''(keels over)''



* ''Series/TheBarrier'': A truck secretly transporting a group of children between two locations has its back filled with a gas that puts all its occupants asleep, except for the guard wearing a gas mask.
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Though anesthetic and hypnotic gasses of many sorts exist, and are still occasionally used in veterinary medicine,[[note]]though "gassing down" is invariably a tactic of last resort,[[/note]] all have the properties of being fairly slow-acting, decidedly dosage-dependent, and fairly easily lethal, unlike the gasses in this trope. '''[[Administrivia/NoRealLifeExamplesPlease Therefore, please refrain from citing real life examples.]]'''

to:

Though anesthetic and hypnotic gasses of many sorts exist, and are still occasionally used in veterinary medicine,[[note]]though by wildlife biologists,[[note]]though "gassing down" is invariably a tactic of last resort,[[/note]] all have the properties of being fairly slow-acting, decidedly dosage-dependent, and fairly easily lethal, unlike the gasses in this trope. '''[[Administrivia/NoRealLifeExamplesPlease Therefore, please refrain from citing real life examples.]]'''

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* ''ComicBook/AmericanFlagg'': Somnabutol™, in low doses, is a recreational drug. In higher doses, it's "the Official Riot Control Device of the 1996 East Coast Meltdown." Also described as "like a wet dream without the hot parts."
* ''ComicBook/{{Batman}}'': Batman has used knockout gas from various sources: bombs, canisters, guns, etc.
* ''ComicBook/TheGreenHornet'': As with the movie and TV versions, the comic versions have also used knockout gas.
* ''ComicBook/{{Hawkeye}}'': Hawkeye uses trick arrows, one of which, is a knock-out gas arrow.



* ComicBook/{{Hawkeye}} uses trick arrows, one of which, is a knock-out gas arrow.
* ComicBook/{{Batman}} has used knockout gas from various sources: bombs, canisters, guns, etc.
* As with the movie and TV versions, the comic versions of ComicBook/TheGreenHornet have also used knockout gas.

to:

* ComicBook/{{Hawkeye}} ''ComicBook/JetDream'': Jet uses trick arrows, "Kayo Powder" [[ShoePhone in a makeup compact]] for this effect.
* ''ComicBook/SandmanMysteryTheatre'': The golden age hero [[ComicBook/SandmanMysteryTheatre Sandman]],
one of which, is a knock-out gas arrow.
* ComicBook/{{Batman}} has
the members of the ComicBook/JusticeSocietyOfAmerica, used a knockout gas from various sources: bombs, canisters, guns, etc.
* As with the movie and TV versions, the comic
gun. Later versions of ComicBook/TheGreenHornet have the character also used knockout gas.



* Creator/DCComics' golden age hero [[ComicBook/SandmanMysteryTheatre Sandman]], one of the members of the ComicBook/JusticeSocietyOfAmerica, used a knockout gas gun. Later versions of the character also used knockout gas.
* In ''ComicBook/JetDream'', Jet uses "Kayo Powder" [[ShoePhone in a makeup compact]] for this effect.
* In ''Recap/TintinTintinInAmerica'', the Gangsters Syndicate of Chicago uses knockout gas on Tintin after dropping him through a TrapDoor and before dumping him into Lake Michigan. In the comic, they planned to use a DeadlyGas instead but got mixed up; in the Ellipse-Nelvana AnimatedAdaptation, they failed to account for Snowy instead.
* In ''ComicBook/AmericanFlagg'', Somnabutol™, in low doses, is a recreational drug. In higher doses, it's "the Official Riot Control Device of the 1996 East Coast Meltdown." Also described as "like a wet dream without the hot parts."

to:

* Creator/DCComics' golden age hero [[ComicBook/SandmanMysteryTheatre Sandman]], one of the members of the ComicBook/JusticeSocietyOfAmerica, used a knockout gas gun. Later versions of the character also used knockout gas.
* In ''ComicBook/JetDream'', Jet uses "Kayo Powder" [[ShoePhone in a makeup compact]] for this effect.
*
''Franchise/{{Tintin}}'': In ''Recap/TintinTintinInAmerica'', the Gangsters Syndicate of Chicago uses knockout gas on Tintin after dropping him through a TrapDoor and before dumping him into Lake Michigan. In the comic, they planned to use a DeadlyGas instead but got mixed up; in the Ellipse-Nelvana AnimatedAdaptation, they failed to account for Snowy instead.
* In ''ComicBook/AmericanFlagg'', Somnabutol™, in low doses, is a recreational drug. In higher doses, it's "the Official Riot Control Device of the 1996 East Coast Meltdown." Also described as "like a wet dream without the hot parts."
instead.

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