[waterhouse]

A similar data point: I carry earplugs everywhere, and usually wear them when I'm at the movie theater (which is kind of rare) and at parties where there's loud music or talking; I do this because sooner or later I notice my ears hurting from the noise. The earplugs I have are flesh-colored ("Hearos"), and I don't think most people notice them unless I point them out.

I'm not sure whether I'm an outlier in terms of hearing sensitivity, or if it's just that I somehow wired myself to interpret certain stimuli as pain, or what. I also find bright sunlight and spicy food painful, and when I've gotten massages, usually I prefer a much lighter touch than what appears to be normal. I guess smell is the remaining sense; I guess I have evidence that (some) smells bother me more than they bother others.