Bosch dishwasher smells bad. The disgusting smell comes from the decaying food leftovers in the dishwasher, which have stuck somewhere inside the drain system. This may be a drain pipe, a mesh filter, a drain hose or a pump. Another reason for nasty smell is washing in cold water.Click to see full answer. Also to know is, how do I get rid of the smell in my new dishwasher?Put 2 cups (500 mL) of white vinegar in a glass or dishwasher-safe measuring cup on the bottom rack. Run the dishwasher through a complete washing cycle using an air-dry or an energy-saving dry option. Do not use detergent. The vinegar will mix with the wash water.Also, why does my new dishwasher smell? A new-plastic smell emanating from the dishwasher is normal, but can be dealt with to some degree. Pour 2 cups of white vinegar into a dishwasher-safe bowl or cup and place it on the bottom rack of the empty dishwasher. Run a normal cycle; the vinegar mixes with the water and helps eliminate the smell. Accordingly, how do I get rid of the smell in my Bosch dishwasher? Use an all-purpose cleaner and a clean cloth to scrub the inside of your dishwasher to remove stains and any food debris inside. Then run a cycle on empty with either baking soda or vinegar; this will get rid of remaining stains, bacteria, and neutralize the nasty smells.Do all Bosch dishwashers smell? Re: Bosch dishwasher odor Also have a Bosch and have had occasional odor problems such as sewage smell when just starting the cycle. Second the advice to keep the filter clean, at least a couple times a month.