Dear roommates: leaving the bathroom door closed and the light on after shitting or showering only works if the bathroom has a fan that is on the same switch as the light. Our bathroom has no fan and the window does not open, so leave the door OPEN to vent the moisture into the hallway and the light OFF to not waste energy. And if you're concerned about smells, start by cleaning your ferret's cage. Oh yeah, and maybe your brain would be able to tell you these things if you fed it a healthy diet instead of alcohol, drugs, video games and staying in bed all day...