Sharing Washers and dryers-or trying not to smell like a guy's shoes

Okay, I don't know what some of these guys are washing in the laundry room! I think my clothes would come out cleaner and smelling better if I went to the river and beat them on rocks. My not- so-bad whites come out brown & I wonder what kind of laundry soap is being used, if any...... The next time I find someone's shoes in the washer I will freeze them in liquid nitrogen and throw them at a wall. It is too expensive to spend that much money on laundry and have all my clothes smelling worse then if I had used them to dry a wet dog!