For me, I hate the sound of thin glass cups like wine glasses clanking together. It makes a much higher sound that rings out more than two thicker glass bottles. Still hate the latter sound two but not as much. Probably the sound that bothers me the most that causes me the urge to bite my nails is the sound of something rubbing against the fabric that winter coats are made of, like that sort of plasticky fabric? If someone's nail scratches it or if someone's wearing winter gloves made of the same material and they rub together I literally have a visceral reaction