How to use coffee grounds?

Coffee grounds placed in the shoe cabinet can also eliminate odor. Many pots smell of oil after being used for a long time. Put wet coffee grounds (or tea grounds) into the pot and fry until it is dry, so as to remove the odor in the pot. Putting coffee grounds in an ashtray can remove the odor and make it easier to extinguish the stalks. Putting coffee grounds in the refrigerator can reduce the strange smell of the refrigerator.