Why Does My Washing Machine Stink?
Your appliance tends to hold moisture and that will breed mold and hence the stink.
Why Is There A Smell?
What shocks most folks is that they tend to forget to maintain the machine that keeps there cloths clean.
Just like a car, you need to maintain the appliance to help get rid of the smell from the washing machine.
Below is a video to help you with your washing machine.