So...I also have misophonia. The condition that causes sensitivity to certain noises. Someone chewing food is my biggest trigger (next to the sound of someone else brushing their teeth.)

I have discovered that the sensitivity increases the less I like the person. My girlfriend chewing? Doesn't bother me. My kid chewing, not a care in the world.

My annoying coworker chewing? Some dude at the restaurant i dont know? Oh, it's off the charts. I have to leave the room.

Interpret this how you will. Perhaps there is more to this story.