My dishwasher had the most awful odor. I cleaned the filters, ran bleach, baking soda etc. It was a little better but not fixed. I finally figured out that in my dishwasher food particles accumulate along the bottom of the door and it needs to be cleaned from time to time. It was so bad the first time I cleaned it I was nearly gagging. We were ready to replace a 3 year old dishwasher the smell was so bad. Now I try to remember to clean it every week or 2. I don't pre-rinse my dishes at all. Drives my mom crazy.