I run a load every day, so my machine does not stink. but i do leave the door open when not in use. However, about the lint filter, it does not necessarily go back on the clothes, it goes down your drain when the spin cycle is on.
Last year, I had posted that my laundry room stank when teh spin cycle was on, and then shortly after, it wouldn't drain and even came up into my dishwasher. Turns out my hubby had to snake the drain pipe all the way out of the house to the septic tank. he then had to open up a section of the drain pipe int he basement, and he collected a two foot long collection of sludge. I'm sure it wasn't all from the washing machine, some was from the laundry tub, but whatever, it was gross and disgusting.