Gym Etiquette

OMG the other day there was a guy on the treadmill next me that kept coughing and coughing.  Which is fine if someone wants to hack up their lung while running on the treadmill.  What bothered me was he wasn't covering his mouth!!!  I mean we are working out about 2-3 feet away from each other.  It never occurred to him that maybe I didn't want to catch his illness.  Ick!!! I kept imagining all of his gross germs coming over to me and getting me sick!!!