I didn’t like onions in my childhood. I grew fond of them when approaching adulthood, particularly when I moved out and started properly cooking for myself and buying my own fast food. Now a sandwich without onion doesn’t taste right.
So I think it’s rather a matter of a particular configuration of tastebuds. Just like I grew out of liking overly sweet foods.
HeyThisIsntTheYMCA@lemmy.world 5 days ago
Alliums (which includes onions) are not uncommon food allergy so there’s something in your theory