Love Is in the N2-O2-Ar-CO2-Ne-He-CH4/References

Cultural references

 * The name of the episode is a reference to the song "" by.
 * N2, O2 , Ar , CO2 , Ne , He and CH4 are the main gases of the.
 * The wide shot of the couch gag in which the Simpsons are crossing the desert on camels shows Homer in white as  in the eponymous film, with the soundtrack very like 's of that film.
 * Mr. Burns associates Valentine's Day with the Chicago.
 * Homer has bought day-after-Valentine's-Day candy on sale at a, which he facetiously says stands for "Cheap Valentine's Surplus."
 * As he passes out the candy he says "You get a box!" "You get a box!" imitating what Oprah Winfrey says when she gives prizes to her entire studio audience.
 * Professor Frink sings "" by.
 * In Professor Frink's lab in the the Springfield Heights Institute of Technology are found:
 * A cabinet labeled "Love Potions" containing flasks numbered 1 to 9, the last being a reference to the song "".
 * A copy of 's statue.
 * Writing on the blackboard, "Love = Never Having to Say You're Sorry", tagline from the movie .
 * A classic movie poster of , with Homer taking a caliper to 's breast, a reference to the furor caused by her ample bosom.
 * A wedding photo of Frankenstein and his.
 * A drawing in a heart of the 2 children from the comic strip .
 * The radio plays "" by Frank Sinatra.
 * Maggie interprets.
 * Cupid is referenced in the blackboard text and appears shooting hearts but is shot by Cletus.
 * M&M's are referenced by the Retirement Castle nurse.
 * The Retirement Castle nurse is binge-watching  and Marge spoils the ending.
 * Downward Doghouse Yoga Studio is a reference to the asana.
 * One of Mona's hallucinations is her as.
 * Professor Frink refers to the, Batman and .
 * Professor Frink's robot, LadyBot, looks like the robot Ava from .
 * Marge mentions the reality television show .

Trivia

 * To Professor Frink's right as he sits in front of the mirror are boxes labeled "Attempts to play God" and "Genetic Oopsies."
 * This episode is in memory of David Kavner, Julie Kavner's father.

Continuity

 * The skeleton of Snowball I is seen in the couch cushion. ("Bart Gets Hit by a Car")
 * Springfield Heights Institute of Technology changed appearance. ("Simpsorama")
 * Hershey is mentioned in the blackboard text. ("Homerland")
 * Dean Martin appears as an hallucination. ("Thank God It's Doomsday")
 * Miss Hoover enters Moe's looking to date Frink, the two previously got together during "Grown-up Halloween". ("Halloween of Horror")
 * Groundskeeper Willie is paired up with Lunchlady Dora. ("Dark Knight Court")

Goofs

 * During the scene where Marge is concerned about the Retirement Castle residents being depressed, three of the residents sigh. One of the residents has an and uses it. However in an earlier scene, when Old Jewish Man turns the radio on to "Prairie Home Companion", the man who later uses the  has a voice.