When a residential dishwasher emits a weird, foul, or musty smell, it is typically caused by a buildup of decomposing organic food waste, grease, and soap scum trapped inside the cylindrical sump filter basket or stuck around the rubber door gasket. When food particles rot in a warm, unventilated environment, they breed sulfur-producing bacteria. You can troubleshoot interior odors easily by inspecting the filter. You can verify that your corrective action is successful when removing and scrubbing the filter basket under running water and running a hot vinegar cleaning cycle eliminates the strange smell entirely, leaving the stainless steel tub completely fresh and deodorized.
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