An airplane bathroom is a pretty germy place. Those are exactly the spots passengers touch before and after washing their hands (if they wash their hands). You Might Also Like ...10 of the Scariest Airplane Landings in the WorldWhy Are Airplane Windows Round? That’s why experts say you should never drink plane water. | urbazon/GettyImages“In general, washing your hands in non-potable water isn’t very effective in cleaning your hands,” she said.