Misophonia! It is a thing, and I have it.
Eating noises, man. They make me want to scream words unbecoming of a lady. Or leave the room. Or possibly stab myself in the ear.
Chewing is SO BAD. Gulping is pretty awful too.
Worst of all is teeth meeting utensil. Why do people chew their forks? Stainless steel has no nutritional value!
WHY DO PEOPLE CHEW THEIR FORKS?
This is one reason why I like restaurants: they are loud enough to drown out the horrible and gross sounds of mastication. (Also: no dishes to wash.)
(Thanks, extinction, for making sure I never have to hear a mastodon masticate.)
On the other hand, I like crunchy snacks.