- Adaptation Displacement: This game is more well-known than the book it is based off of, "Little Monster's Scratch-and-Sniff Mystery" from 1980.
- Ear Worm: The James Bond and Batman-esque versions of the game's theme song.
- Nightmare Fuel: The Evil Smell Switcher's initial strike, creeping out of the bedroom in the middle of the night and into the kitchen to switch the smells of the orange juice and peanut butter.
- Suspiciously Similar Song: There are SO MANY parodies and sound-alikes of existing songs. Many of them have lyrics relating to the game's plot or whatever the singing subject is. They are usually triggered as clickable hotspots...
- The main theme tune is based off the James Bond theme music, and a variation based on the Batman theme song is used for the Private Eye Mobile theme.
- On the first page, a Rick James-esque fish performs a parody of "Super Freak" (appropriately titled "Super Fish.")
- On the second page, the Grease Monkeys that repair the Private Eye Mobile sing a spoof of "Greased Lightning" (appropriately called "Grease Monkeys.")
- On the third page in the refrigerator, a group of eggs perform a parody of "Legs" by ZZ Top, but about "Eggs" (complete with beards, sunglasses, and spinning guitars.)
- On the sixth page, two female customers sing a parody of the theme song to Laverne & Shirley, about the Smell Switcher's capers.
- On the seventh page, a fish sings a parody of "The Candy Man" (largely Sammy Davis Jr. 's version) appropriately titled "The Smell Switcher Can," about making fish smell like candy. Also, Little Monster and Kerploppus perform a parody of "Anchors Aweigh", with the lyrics as "The Smell Switcher's Getting Away," while dressed in naval outfits.
- On the eighth page, Kerploppus will impersonate Conrad Birdie and sing a parody of "One Last Kiss." There is also a parody of Barbra Streisand and Neil Diamond's "You Don't Bring Me Flowers" (as the page takes place in a flower shop.)
- On the ninth page, there are parodies of "ABC" by The Jackson Five and "It's Not Unusual" by Tom Jones, with lyrics relating to the Smell Switcher's capers. Little Monster also performs a spoof of "Be Our Guest", written as "Come To France" (due to the page taking place in a French restaurant).
- On the tenth page, there are parodies of "Like a Rolling Stone" by Bob Dylan, "I Feel Good" by James Brown, "Islands in the Stream" by Kenny Rogers and Dolly Parton, "Close To You" by the Carpenters, and "Walking in a Winter Wonderland." All songs on this page have the lyrics referencing how the garbage dump now smells lovely (thanks to the Smell Switcher.)
- On the eleventh page, there are parodies of the "Armour Hot Dogs" jingle, "Land Down Under" by Men at Work (sung by... a man at work), "Every Breath You Take" by The Police (sung by a police officer), the "Macarena", and the theme to New York, New York (sung by Detective Kerploppus impersonating Frank Sinatra).
- On the twelfth page, Little Monster will impersonate Jimi Hendrix and sing a parody of "Fire" (about fire safety), and Detective Kerploppus will perform a parody of the theme to For Your Eyes Only. Additionally, Yally's Full-Body Disguise moment is accompanied by a sound-alike of the Mission: Impossible theme, and Jerry Bombanat attempting to get out by pretending to be a Superman expy is accompanied by a spoof of John Williams's theme to Superman: The Movie.
- As the true identity of the Smell Switcher is caught in a Rube Goldberg Device, a parody of Raymond Scott's "Powerhouse" (famous for being heard in many Looney Tunes cartoons) plays.
YMMV / The Smelly Mystery