The best examples of this in my life are pretty recent. The first one happens when my husband eats these cinnamon pita chips that he loves, which is one or two nights a week. Even if I'm in the other room the crunching sound makes me feel like jumping out of my spine. I don't want to be a bitch so I don't say anything, after all, he's not doing anything wrong, but jesus-fucking-christ it bothers the shit out of me when he eats those things. I really don't mean to, but I know I sigh loudly and clear my throat a ton when he's eating them, and adjust positions a bunch on the couch or in the bed. Luckily, he hasn't made the connection.
And this one is kind of funny, a friend of ours stopped by the other night just to say hello and chat for a bit. We had some Milk Duds sitting on the table, and she grabs the box, stuffs about five of them into her mouth, and KEEPS TALKING. I damn near broke out in a cold sweat! The sound of those Duds, the smacking of her lips, the omomomomom sound............I kept it cool, but inside I was certain my head was going to explode. We had a good laugh about it after she left, but shit! I'm hiding all food items the next time I see her at the door, lol.
This last one is only tangentially related, but at night one of my cats has the worst habit of coming into the bedroom and cleaning himself LOUDLY while lounging at the foot of the bed. Slurp slurp slurp, scratch scratch scratch, slurp slurp slurp............you get the gist. We've taken to wearing earplugs at night because of it, lol.
So, anyone else have extreme reactions to food noises?