If my washing machine has a bad odor, what can I do?

The best way to handle bed washing machine odors is to prevent them from occurring in the first place by:

● After a wash cycle, use a dry towel to remove moisture from the door seal. 
● Keep the door crack open for ventilation. 
● Periodically run ECO DRUM CLEANING & HYGIENE DRUM CLEAN or similar washing program available for your washing machine model.

 If the bad scent is already there thy to run an empty (no detergent or clothes) hot water wash (over 50 °C ) with ½ Cup of vinegar to get rid of the bad smell in the machine. 
You might need to run few of these washing cycles defending on the current condition of your washing machine.