Run the water for 20 seconds after grinding food waste to flush drain line. If odor remains, put ice cubes and a quartered lemon into the disposal and run it without water for 10 to 15 seconds. Leave lemon and ice mixture for 30 minutes, then run the disposal with water to clear the drain. Periodically clean under the rubber gasket at the sink opening of the disposal to remove any garbage residue. Never store food waste in the disposal between grindings.
Food waste corrodes the blades and supports bacteria growth in the disposal.
Be sure to wash the rubber gaskets with the detergent solution using a small brush. Also, clean the drainage pan below the refrigerator, and all the shelves in the refrigerator or freezer. If the odor persists, wash out again using a baking soda solution. To absorb the odor, pour baking soda onto a cookie sheet and place it on the refrigerator shelf. If this does not seem to work, spread activated charcoal onto a cookie sheet and place on the shelf inside the refrigerator.