Jun 1, 2021 If I let myself get fixated on someone chewing food, it can bug me to know end. The sound, sometimes the click of their jaw...I can't explain why- but it really gets to me. People who get REALLY annoyed by it have something called misophonia. (Pronounced miss-oh-FONE-ee-uh) That's where common sounds like chewing or heavy breathing can drive you nuts. Researchers at Newcastle University in England scanned people's brains while they played different sounds that might trigger a reaction. And for people who have the condition, certain parts of their brain lit up MUCH more than people who don't have it.