I've commented elsewhere here recommending you maybe look into getting a medical card if you haven't already, it makes it a bit easier to rebuff people who say you're just using chrohns as an excuse (and dw, i know it isn't an excuse). Not to say you shouldn't smoke unless you're using it 100% for medication, toke as much as you want recreationally too. But the other posters are correct in that campus is smoke free. Have you looked into portable vapes? I really like the magic flight box- it's cheap, smaller than any pipe I've seen, and easy to use. Doesn't burn super consistently though. The reason i suggest looking into vapes is because the smell isn't as recognizable or offensive (smells like popcorn to me), so you may have a better time staying covert and not bothering other people :)