"Use an exhaust vent. Open a window"

My shower stall has neither, and I doubt the landlord would unpocket to have one installed (No matter that in a few years they're gonna have to GUT and re-do the whole bathroom because of lack of ventilation)

I'd never build a shower-stall without a window that can be opened

"Rain-Away"
Ya know what... I think I have a bottle of that in the basement, that I bought for my car wind-shield and never used... thanks fer reminding me!

:-)