Rinds of 1 to 2 lemons To rid your sink of bad smells and replace it with lemon freshness, juice 1 to 2 lemons and save the rinds to run through the garbage disposal with plenty of cold water. It’s also a good way to dispose of older lemons that are past their prime and too soft to use in cooking; however, it’s best to avoid lemons that have grown dark or moldy for these are not likely to smell fresh once cut open.
A few ice cubes added, start the garbage disposal and then using cold water will also help clean before deodorizing