V.B.
My manual suggests leaving the odor open after use. They are water/air tight, after all, so if you close the door when not in use, it makes sense there'd be smell/mold problems. Mine is nearing 7 years old, and I haven't had any issues with mold or smells. And I don't run the "cleaning cycle " but maybe once a year!
(I do use vinegar as my rinse/fabric softener, though).