Greasy foods can often clog up your drain, and leave a disgusting smell. But if you have 60 seconds, I will show you how to get rid of the smell, for free. To clean up the drain, take a cup of water, mix in salt. And make sure that there is enough salt in the water, that the water is visibly cloudy. Now just pour the mixture down the drain. And let it sit for about 10 to 15 minutes. And once the salt is completely settled then just turn the water on, and let it rinse thoroughly. The salty water should loosen up the gunk enough so that you can flush down everything down the drain, leaving it clean and fresh. You can use this method for every sink in your house, and this will take care of your grease and odor.