Do you have a stinky sink drain? The plumbing & drain experts at Roto-Rooter are sharing helpful advice so you can get rid of the smell using basic ingredients you already have in your kitchen. The third method uses just two simple ingredients: A cup of salt and a bowl of ice cubes. Just dump them down the sink drain and turn on the garbage disposal until the cube are all chopped up. Let sit for a few minutes then rinse with hot water.