Why does my garbage disposal smell bad?

Bad odors from a garbage disposal are caused by food particles trapped in the rubber splash guard, blades, or drain line. Run cold water with ice cubes and lemon or orange peels to clean the blades. Drop baking soda and vinegar down the drain, let it fizz, then flush with hot water. Remove and clean the rubber splash guard regularly. Avoid putting grease, coffee grounds, or starchy foods down the disposal.