First post on this forum!!
I hated durian, we ate in Malaysia and it was yuck.
I had a piece of raw squid sushi while in Japan last week. I thought it would be fine (I like raw fish) but I couldn't take it. I managed one of the two pieces, but couldn't eat the other one!
I can't eat capsicum which is annoying because I am normally a pescetarian (I eat no meat but eat seafood) and they tend to but capsicum in all vegetarian food.
Can't think of anything else that I really, really detest.