Since no one has ever heard of capsicum allergy, I get a lot of "you're allergic to... what? Capsicum?!", with attitude. Yes, I am. Every single commercial sauce on the market seems to have paprika (powdered red capsicum) in it; it's in salad, in great chunks; it's added to meat I would have otherwise quite enjoyed, as delicate curls of garnish. Even ordering hawaiian pizza isn't a guarantee, the random "oops" bits contaminate whole slices.
But then... I discovered a fellow sufferer! I told @kissability that I would post a (true!) story about the social challenges of being allergic to something other people eat as a matter of course.