The answer to 'why is my garbage disposal foul smell' is that a smelly garbage disposal is often caused by food buildup, bacteria growth, or a clogged drain. A foul odor can indicate that food waste is rotting in the disposal or the drain is blocked, preventing proper drainage.
Common causes of a smelly garbage disposal include not running it frequently, allowing food scraps to build up, or not cleaning it regularly. Over time, this can lead to bacterial growth and a nasty odor. The disposal may also become clogged with certain foods like grease, eggshells, or coffee grounds, which can get stuck and start to rot.