A weird 'quirk' of mine: i find fruit revolting. Can't stand the smell, flavor, texture, even the touch, sometimes even the sight. The only exception: lemons and oranges. I have no problem with vegetables either.
I have a weird compulsion. I become extremely disconcerted when a door is left open. I can't relax until it's shut. I don't feel like someone's behind it or anything like that, there's no face to the anxiety. I just feel like things aren't right.
This, so much.
http://en.wikipedia.org/wiki/Misophonia I have this, though I only recently learned what it's called. http://www.youtube.com/watch?v=rlWHLx9PTE4 Here's a friendly little portrayal, haha. I've wanted to hit people, throw things, run away, anything to get away from or stop trigger sounds. Snoring is the biggest one for me, so I guess the worst is when I kicked my brother in the stomach when I was little. My whole family thought I was demonically possessed or something, psychologists suggested I might be autistic (not even slightly), and school lunch and road trips were hell at times.
Have since learned to control my reactions to it, and that eating crunchy stuff when other people are helps somewhat, but it's almost overpowering.
I feel for you. I have had misophonia since i was about 15 years old.
Very few know about it, even less are sympathetic. If you try to explain it to people, most either don't believe it, ignore/greatly underestimate it/forget about it, tag you as batshit insane, or think it's made up and you're being a jerk just because.
The biggest trigger for me is chewing with an open mouth, and, i know it sounds ridiculous, but, when someone near me is having a cigarette, the sound of parting lips to let out smoke. It fills me with intense rage, and if i don't distance myself or they don't stop i'm really afraid of losing control.
In those moments i feel horrified, because consciously i don't want to hurt them, and i do realize rationally, even while it's happening, that they're not doing anything wrong or menacing or rude on purpose, yet i want to beat the tar out of them with every fiber of my being.
More than a decade later, i rely heavily on prevention. And earphones. Which are seen as rude, especially during a family dinner, but i don't have much choice.
Why eating has to be such a social event, i'll never understand.