Trash can is the way to go - as long as it is emptied by custodial staff at end of day there shouldn’t be any odor from anything disposed of in a mensroom.
We had a patient who routinely flushed his pad down the toilet even though a trash can with a sign clearly stating that it was for ‘disposable pads, tampons, etc’ was next to the toilet. Also another sign in block red letters above the toilet: PLEASE DO NOT FLUSH PADS OR TAMPONS DOWN THE TOILET! USE THE TRASH RECEPTACLE!!
The guy was no dummy - an electrical engineer - and one day after the 3rd plumber’s visit at $250 each, I told him that if he did it again HE would pay, not me. He apologized and never did it again.
A lot of people simply don’t realize how much $$ is wasted every day on this sort if thing. I see flushable diapers in the supermarket and I just shake my head. Sure, it might break down after it’s immersed in water for a few days or weeks or months but not before it plugs up an elbow bend in a waste pipe.
Sorry to digress but your question touched a nerve😂