Oh Lordy does open mouth chewing anger me!!! Pretty much any and all human-specific noises make me incredibly angry. I think because usually it's considered rude to mention it, so you've had to sit and stew in pure torture listening to/ smelling that person without being able to stop it. I think some of the anger also comes from those people- I'm sure you've met them- that when you politely ask them to stop, they purposely do it for a while longer just to annoy you until you're screaming at them and beginning to break down in tears... Of course, WE are the one "misbehaving" in this scenario, and that person will get mad at US for "overreacting". So now, that sensation is somewhat tainted in our minds and any interaction with it again causes immediate pure anger. I SO SO SO relate to wanting to punch my fiancé in the face when he's making body noises... Chewing, breathing loudly, etc... But he has ADHD so when he doesn't take his meds he turns into a 10 year old and treats me like his little sister. So part of HIS disorder is to annoy the hell out of me the best he can, and he knows the sound of shaking a pill bottle over and over, burping, touching my face, or leaning his weight on me all set me off immediately....
So yeah... I can relate.

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OH also- NASALLY VOICES. I have never been able to befriend a person with a nasally voice and have even grown to hate that person. I know in high school two people in my group of friends that I just couldn't handle being friends with so I tried to avoid them at all costs.