the worst smell in a public bathroom is cigarette smell for some reason. its weird combo of cigs, porcelain, water, humidity, disenfectant, whatever, but i hate that fucking smell. the heads in the suck all smelled like that from one asshole who had to lite up in the shitter & throw his butt in the urinal of course where it stayed until someone had to pick it out before inspection.....smokers suck balls btw.
The general use one was just redone last year. It already smells. We also have " waterless urinals ". They don't flush, gravity does it job. They back up once a week and the River Ganges spills onto the main floor.