This sudden rush of hormones and pheromones is generally due to the fact that The Vamp is the episode's Monster of the Week and is using the good guys' sex drives to distract them from her dastardly plan. She usually does this in secret, but if her pheromones are strong enough, the heroes can know exactly what's going on and not care.
Sometimes, Vampires Are Sex Gods is a supernatural effect and used to lure Muggles to the dinner table. Horny Devils are also fond of just straight-up enchanting their victims supernaturally before sucking out their soul.
This trope is when Love Is in the Air is caused by the presence of an alien or fantastic creature, and works like a more passive version of Aliens Made Them Do It. It's generally a first-season ploy by sci-fi shows to get ratings through sex. Can also be Fanservice. For the single-target version, see Pornomancer. Also Not Right in the Bed.
- Diamond Cut Diamond has the esper Yodogimi with the ability to use a pheromone-like smell labelled Temptation. It seduces all men in close vicinity that inhale it. She can make them do whatever she tells them to. It only works on men, which actually becomes a plot point multiple times.
- In Killing Bites, Brute Civet has the ability to disperse pheromones into her surrounding area. Not only does it cause intense feelings of lust in the victims, it also causes them to temporarily Feel No Pain.
- Sakie Satou of Interviews with Monster Girls is a succubus. By her very nature she causes men to be attracted to her. This actually causes Sakie a lot of problems, since she just wants to lead a normal life. For example, she's reluctant to pursue love because she can never be sure if the other party is interested in her or if it's just her effect on them. Sakie is also forced to live in a remote area with no one else around because, while she can control it to a point with tricks like dressing as unattractively as possible, she has no control over her power when she sleeps, which can cause obvious problems were she to live in an apartment building. The only one she's seen unaffected by her natural attractions is Takahashi, who really just has amazing self-control and manages to hold himself back until she's out of sight.
- Several characters in Marvel comics can induce lust as a main or secondary power. Spider-Woman (Jessica Drew) has an involuntary version, while Starfox (Eros), the Mandrill and Daken have similar but controllable abilities. The Purple Man is widely despised, even by many other villains, because he uses his broader mind-control abilities to accumulate sex slaves.
- Emily Crowe from Desolation Jones underwent an experiment to augment her pheromone production, but it backfired and she now triggers fear and revulsion in everyone she meets.
- The Batman villain Poison Ivy has this as one of her powers.
- A villain named Mr. Fear (usually associated with Daredevil) specializes in pheremones that cause... well, fear. However, he once experimented with others, including one that makes men irresistable to women, and used it to try to convince Betty Brant to kill Spider-Man. Seeing as he tends to be an Ineffectual Sympathetic Villain, it didn't turn out too well.
- In the DC Comics mini-series Relative Heroes, the heroine Allure has this power. It is something of a Cursed with Awesome situation as she cannot control the desire she inspires in others.
- Similar to Poison Ivy, The Mighty Thor villain Amora the Enchantress uses her magic primarily for seducing and manipulating males.
- Star Trek: The Motion Picture had Ilia, a Deltan who emits sexual pheromones that can create reactions in other species.
- The nude vampire Space Girl from Lifeforce is very beautiful, but the extent to which her victims became helpless, infatuated wrecks when confronted with her implies there is more to her allure than just appearance. One of the doctors who survived an encounter describes her as "the most overwhelming feminine presence I've ever encountered". In the case of one of the male protagonists, his obsession with the Space Girl is explained by her taking the form of the perfect woman from his subconscious desires.
- The bad guy in the movie Night Angel is Lilith. After waking up from her slumber, she goes on a rampage supernaturally seducing and killing people left and right. She gets nearly the entire staff of a glam magazine to completely fawn over her (including the female editor) and one guy affected by her spell even shoves his foot through a broken glass door to get near her.
- In So Long, and Thanks for All the Fish, the mythical Fuolornis Fire Dragons are said to have had this effect:
There is, for some unfathomed reason, something almost unbearably sexy about having huge fire-breathing magical dragons flying low about the sky on moonlit nights which were already dangerously on the sweet and fragrant side... No sooner would a flock of half a dozen silk-winged leather-bodied Fuolornis Fire Dragons heave into sight across the evening horizon that half the people of Brequinda were scurrying off into the woods with the other half, there to spend a busy breathless night together and emerge with the first rays of dawn all smiling and happy and still claiming, rather endearingly, to be virgins, if rather flushed and sticky virgins. Pheromones, some researchers said. Something sonic, others claimed.
- There are a few examples in the Star Wars Expanded Universe. Marvel Star Wars introduced Zeltrons, redskinned near-humans who had pheromones, emotion-affecting abilities, and attraction to Force-Sensitives. Shadows of the Empire introduced Falleen, reptilian humanoids with much more powerful "date-rape" pheromones. (The Big Bad of the novel, Prince Xizor, was a member of this species; he had only partial success using this ability on Leia.)
- The Novelization of Star Trek: The Motion Picture explains that Ilia has this effect on humans. The movie itself just makes it look like Sulu has the hots for bald chicks.
- In The Dresden Files, vampires of the White Court can have this effect on humans in proximity. Whether or not they can control it is another matter entirely. Thomas in particular has a lot of trouble simply holding down a job, since he keeps getting assaulted by the amorous attentions of his coworkers, at which point the Double Standard kicks in and he gets fired because his bosses assume he started it. Their blood has a similar effect, "disabling" a pair of Harry's werewolf allies after they attack one.
- People do get "in the mood" during dragon mating flights in the Dragonriders of Pern series. All dragons have vast psychic power so during a mating flight their feelings influence anyone near them. This fact of life is why Weyrfolk have such a relaxed attitude towards sexual relations; it's unreasonable to expect people to remain chaste until marriage when they are frequently exposed to a Living Aphrodisiac over the course of their lives.
- The smaller ancestors of the dragons, Fire Lizards, also have this effect but to a much lesser extent.
- Gold dragons and gold and green fire lizards also have this effect on each other, with sometimes fatal consequences. The males are triggered to a mating flight by a female's heat, and if a non-broody female is in the area when a mating flight happens, she may be triggered into her own heat and fight the first female for possession of the males.
- Michael in the Star Shards Chronicles has this ability when possessed by his parasite. Women are preternaturally attracted to him, no matter the age gap or marital status of said woman (he is introduced to the story when another main character walks in on him making out with a teacher at school). There is a downside, however: if he has sex, then his parasite will devour his partner's soul. And his sex drive is constantly set for maximum due to the parasite's influence.
- Played straight with every single one of the Fairies in The Mirrorworld Series. Jacob ends up "spending the night" with his ex-lover Miranda, even though he's rapidly running out of time to save his brother.
- In the Ringworld novels by Larry Niven, "vampires" are a nearly mindless branch of the Pak (ancestors of humans, and also of every humanoid species on the Ringworld) that secrete pheromones which are "close enough" to affect all other Pak-descendants (it's implied there are some hallucinogenic properties as well). The pheromone-fueled orgy that follows serves as a distraction to allow the vampires to feed.
- The veela in Harry Potter have this effect on men. It's never exactly clarified whether male veela exist or what effect they have on women, but its presumed they exist since Fleur Delacour, the most prominent veela character is identified as half-veela.
- In the erotic comedy Rock 'n' Roll Babes From Outer Space by Linda Jaivin, the Nufonians have this effect the moment they land on Earth, including Suddenly Sexuality (though they are landing on Sydney's Oxford Street). It's mentioned that while the Nufonians no longer had temples put up to them, they could still make an impression.
- The Orville has Darulio, a rare male example. His species of Rubber-Forehead Aliens secretes pheromones that works on other species as well, causing them to become romantically obsessed with them. This worked on both Kelly and Ed Mercer, although it's further complicated in that he claims it's something he can't control (the pheromones are not being secreted around the clock), and his people's customs mean it would be insulting for him to turn down an offer of sex. The pheromones were also unintentionally transferred to the alien blob Yaphit, causing Dr. Finn to throw herself at him.
- In the Stargate SG-1 episode "Hathor", a Goa'uld who has taken over the role of the Egyptian goddess of Fertility, Music, and Inebriation finds her way into SG-1's base and turns every man there into crush-addled slave via some unknown brew of pheromones and other stuff before using Daniel's DNA (and by "using Daniel's DNA," we mean "making him have sex with her while under her mind control gas") to father her children.
- A brand of the stuff that skips the romance part is used in later Goa'uld's arsenals. One whiff is apparently enough to brainwash someone indefinitely until it can be counteracted.
- On True Blood, Maryann has this effect on everyone around her. She's a maenad, a follower of Dionysus, and almost a god in her own right. She uses the orgies she creates around her to disguise her real intention: bringing Dionysus into physical form.
- All fullblooded faeries are this for vampires. Their smell alone can drive a vampire wild.
- The X-Files:
- The monster in the episode "Genderbender" is this, seducing its prey with human pheromones, killing them with sex, and assuming their identity.
- And Jade Blue Afterglow from the episode "First Person Shooter" who was a stunningly gorgeous suspect in a murder case. She comes in for questioning in a tiny leather camisole/skirt combo, and every male in the precinct goes insane.
Mulder (after watching Jade Blue Afterglow saunter down the hall): I don't know about you, Scully, but I am feeling the great need to blast the crap out of something.
- Buffy the Vampire Slayer had one in Season 1, that could turn into a huge praying mantis. It took a while for Xander to recover from that one.
- Desirée Atkins, the Freak of the Week in the Smallville episode "Heat", qualifies.
- Alisha on Misfits has this as her superpower; she's able to drive anyone she touches into a state of lust. This is treated as Blessed with Suck, though, as she can't even carry on a proper relationship with her boyfriend unless she wants to risk things entering rape territory.
- Star Trek:
- Star Trek: Enterprise. The famous Orion slave girls make an appearance, and are somehow able to give all the Earth women headaches and all the men hard-ons. Later the Orion captain admits that actually men like him are the slaves, to these women. Fortunately Mind Link Mates T'Pol and Trip are immune and so help take back the ship.
- In Star Trek: The Next Generation, the episode "The Perfect Mate" has a metamorph. She is a woman who, through deep empathy, is able to automatically become the perfect mate to any male. To say the very least, it is rather distracting to the men on board, including Captain Picard. It's not solely sexual, since she takes on the likes/dislikes/ideal attitudes for each man's ideal mate, but has the same effect.
- In Star Trek: Deep Space Nine, Lwaxana Troi briefly became this in "Fascination" when she contracted some kind of Betazoid disease that spread her unrequited feelings for Odo to everyone around her on Deep Space Nine, turning latent attractions into all-consuming desire.
- In the Supernatural episode "Sex and Violence", Sam and Dean are investigating a rash of murders committed by the victims' loving husbands or sons. They discover that a Siren is taking the form of each man's ideal woman, posing as a stripper, using her saliva to drive them crazy with love, and manipulating them into murder. However, things take a turn when the Siren takes the form of a man and tries to get Dean to kill Sam.
- An episode of Special Unit 2 deals with a Link who emits powerful pheromones when scared (it's stated that Links like that are the inspiration for the Cupid myth). He ends up doing it outside a courthouse, and the pheromones (besides causing everyone around him to start making out with strangers) cause a Hanging Judge to suddenly start letting hardened criminals go free. The team has to find the Link and get him to undo the effect on the judge before a high-profile criminal is set free.
- Lorelei in Agents of S.H.I.E.L.D. is an Asgardian that can make men fall in love with her with her voice or touch. Most of her victims think they both love each other, but when she uses it on Ward he knows that she is using him and brainwashing him, he just doesn't care.
- According to the backstory, Makai's succubi, including Morrigan and Lilith, are able to magically generate intense and spontaneous lust in mortal humans (though how much this is magic and how much of them being sexy Horny Devils in Stripperiffic outfits is up for debate). Also, their bodily fluids cause instant death.
- In Ookamikakushi, Hiroshi Kuzumi is what's called a "Temptation" — emitting a powerful scent that causes the Kamibito to lose control of their bestial instincts and try to forcibly kiss him.
- female Orcs in Bloomin Faeries have natural aphrodisiac saliva, this is needed for male Orcs to mate with them since female Orcs are (normally) considered to be very unattractive even by their own species standards.