I think some people can actually just get rid of their allergies by sucking it up and dealing with them for a little while. I know I was a little allergic to cats when I was younger (if I rubbed my eyes after touching a cat they'd get pretty swollen, red and itchy. or I'd get puffy like crazy just from a slight scratch). BUT, this only started after not having a cat for a while (used to have a cat when I was really young and had no issues). A few years ago my GF moved in with her cat, and while at first I showed a mild allergic reaction (sniffles, sneezing, puffy scratches), after a month or two, the symptoms just vanished completely. And it's not just her cat now, I can be in a room with 30 cats, have them climbing on me, nibbling my fingers, scratching me, and I'll be completely fine, the scratches don't even puff up. Even more bizzarre is my seasonal allergies are gone (used to have horrible ragweed allergy, insanely itchy roof of mouth, sneezing, watery eyes, stuffed nose, etc). I told my mom, and she said she was the same way, that she had horrible allergies for a little while when the new neighbors moved in and they had a cat that roamed around out doors, and then after a month or two they were gone and she was fine.