Ever had a smelly plastic storage container that you couldn't get the order out of? Pour a little lemon juice in it and let it sit for awhile then wash as usual. I have been able to rid my containers of onion smells and fishy smells this way.
after using a lemon instead of throwing it away put unused parts down the garbage disposal this helps rid odor that occurs.
A couple of ice cubes down the garbage disposal helps sharpen the blade.