Freshening the disposal
Having a garbage disposal is so useful, but often used wrong. Rather than throwing any leftovers down there that you can, it’s really only designed to deal with the small bits of food that are rinsed off of dishes.
Either way, it is essentially another trash can, and can therefore smell quite terrible. The best way to deal with this is to cut a lemon or lime into quarters and throw them in there. The pieces will get ground up in the disposal and the citrus smell will waft out into your kitchen.