I smoke in my bathroom with the shower on a lot, and it's pretty great. I turn the fan on, close the window (I want the smoke to go out of the vent rather than out of the window, cause the window is somewhat near my parent's bathroom window). I've never had problems with moisture. After you smoke you might want to take a shower cause it's fun but a hot shower will sober you up...so take a cold/lukewarm shower or a bath if you don't want that to happen. The only danger with this, really, is being so stoned that you leave incriminating stuff (ashes) in the bathroom or your roomate or whoever getting suspicious that you keep taking 1 hour showers every night.