Quick Tip for Cleaning Garbage Disposers: If your garbage disposer smells a little funky, clean and sanitize it with baking soda.
Pour one-half cup of baking soda down the drain, followed by one cup of white vinegar. Wait until the bubbling and fizzing stops, then pour a full kettle of boiling water down the drain. Wait several minutes, then turn on the cold-water faucet and run the disposer for a few seconds to flush out the drain line. Repeat at least twice a year.