Like so many others the eating of crisps, or anything a bit crunchy is one. Eating with their mouths open (While eating Crisps) will drive me into a magma like level of anger. wet sloppy mouth sounds.
Someone mentioned when someone speaks they get a fluttering sound in their ear. I get the same sometimes when My wife is talking, and a few other people, but mostly my wife. its like I have just been swimming and I still have water in the ears, like a roaring noise.
I have to make sure I am eating when others are, or all I can hear is their eating.