While reading for class from Julia Kristeva's Powers of Horror: An Essay on Abjection, I came across this paragraph on food loathing. THIS is what I mean.
Loathing an item of food, a piece of filth, waste, or dung. The spasms and vomiting that protect me. The repugnance, the retching that thrusts me to the side and turns me away from defilement, sewage, and muck...Food loathing is perhaps the most elementary and most archaic form of abjection. When the eyes see or the lips touch that skin on the surface of milk--harmless, thin as a sheet of cigarette paper, pitiful as a nail paring--I experience a gagging sensation and, still farther down, spasms in the stomach, the belly; and all the organs shrivel up the body, provoke tears and bile, increase heartbeat, cause forehead and hands to expire. Along with sight-clouding dizziness, nausea makes me balk at that milk cream, separates me from the mother and father who proffer it...She goes on to talk of rotting flesh and wounds with pus. So yeah. Avocados and coconuts.