Washer Rinse Water Has Terrible Odor

First try running an empty load of straight hot water adding 2 cups of white vinegar not apple vinegar and let it run the cycle. If the smell is still there then do the same thing again this time with baking soda and run through, then run once more with just straight hot water and nothing else, this should do it. If it doesn't then you may want to check your inlet water hose as it could have a buildup and need replaced.
Hope this helps you!