Maytag Quiet Series 300 smells broken door latch and lower rack
I have had the same problem and there is a simple fix.
The problem in my case was the floating water sensor was stuck and gummed up with grease.
On the bottom of the dishwasher, in the front right corner there is a round doughnut-looking thing. This is the water level sensor. It is open on the bottom, and grease collects there.
When this happens, the air pocket is too small, and the float won't float. then the dishwasher overflows. To clean it: just reach under with your finger, and scoop out the grease.
Sometimes, after doing this, the float then gets stuck in the "up" position. When this happens, the dishwasher completely drains, and the heater element for the dishwasher is exposed, and food cooks onto it, and that is where the smell is coming from.
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