This is very interesting. I think I have a mild version of this. Since I was a young (6 or 7) kid I remember how it pissed me off when someone would make noises while I was watching TV. It used to be enough for me to storm out of the room.

Nowadays, I have more control, but it still bothers me when my office mate munches on chips or an apple at work. I usually put on my noise cancelling headphones and listen to death metal, and that takes care of the problem.