Olfactophilia is an unusual sexual attraction where an individual derives sexual pleasure from smells and odors. Given the large body of research on olfaction, it is not surprising that, in some cases, there should be an association with sexual behavior. Smell is a powerful sexual stimulus. Furthermore, the erotic focus is most likely to relate to body odors of a sexual partner, including genital odors. One subtype of olfactophilia is 'eproctophilia'.

Eproctophilia also known as fart-fetish—involves being sexually aroused by anal flatulence. As is the case with many other fetishes, sexual arousal can arise from different situations for different members of the eproctophilia community. Some individuals are at their horniest when farting on their sexual partners, whereas others are most turned-on by the act of being farted upon. Many of us have access to five senses, all of which can be potentially engaged by a hearty trump. Sour smells, deep inhalations, loud rips—everyone’s repertoire of preferences is slightly different.

So how exactly do you develop a fart fetish? According to sex and relationship therapist Sarah Berry, “farts are generally regarded as funny, gross, and/or embarrassing. Any experiences exacerbating any of these reactions could give rise to farting as a sexual preference.”