Smoking is supposed to help UC and make CD worse.
This. It's a bit paradoxical and nobody really understands it. However, smoking is not just a little bit bad for Crohn's, it's really
I dunno about
Crohn's colitis, because I can't find any study which distinguishes between that and regular Crohn's. However, I would assume Crohn's colitis to be more like Crohn's than UC.