My lab never stinks and she doesn't get bathed that often, maybe once a month or so. My son's chihuahua is the foulest smelling animal I've ever experienced, and he gets a bath a week or more. I'd rather smell my son's rancid hamster cage than his dog, and the breath on that little beast, OMFG. Oh wait, my lab is a girl, the chihuahua is a boy...correlation? hahahah
I think dogs are like people, some smell ok, some not so much.