At least once a week after emptying mine I leave the door open so it has a chance to air out and get completely dry on the inside. Mine is so quiet and air tight that it tends to smell bad quickly... 4951
Most have a food blade mincer thingy in the bottom before the drain. If it gets nasty it can stink. Cleaning it out may help. I find that filling the rinse aid and soap dispenser with distilled white vinegar helps clean everything out and remove hard water deposits too. 4951