> There is a water fountain in a corner of my building at work that blows sewer gasses in your face if it hasn't been used in awhile. It's the most horrific st

> There is a water fountain in a corner of my building at work that blows sewer gasses in your face if it hasn't been used in awhile. It's the most horrific stench to inhale right when you are about to drink some water. Yes, the trap seal was lost to evaporation (assuming it's properly vented). People I know at times ask me why their basement shower (most often) smells--same thing; no trap seal due to evaportion from lack of use. And Yes, this is another way her building might have taken on fumes... many variables; heck it might have been sucked in from the HVAC system, and not have anything to due with the plumbing.