You can easily maintain a gas grill and smoker combo. You just need to clean your grill after every cooking session. These will make you clean all the food stuck to the grates, grease, and drippings and it will also prevent the grease and dust build-up. It is important to make sure that the grease tray and drip pan are not full because these can cause sudden scary flare-ups.nnBy cleaning your gas grill, your grill will not emit any strange smell or give an unjoyful flavor to the food. Simply remove the grease tray and drip pan then clean them. Once they are completely dry, you can insert them back.