Summarize the following:
When your garbage disposal starts to smell, there's a chance that there's a clog in the unit somewhere that’s causing the bad odor. In order to get rid of the odor, you must first remove the clog. When cleaning the disposal, never stick your hand into the drain, even if the appliance is turned off. To remove clogs:  Unplug the garbage disposal Shine a flashlight into the drain to see if you can locate any large clogs, stuck food, or other blockages Use tongs, long tweezers, or pliers to remove the blockage Plug the appliance back in Turn on the water, turn on the disposal, and run the disposal for a minute Turn off the disposal, followed by the water Because the disposal is always processing and draining, it can be difficult to give it a good soaking and cleaning. This means food particles can get trapped in the disposal, and they’ll start to smell eventually. To soak the disposal for a thorough cleaning:  Put a plug in the garbage disposal drain Fill the sink with at least 4 inches (10 cm) of water Add 2 teaspoons (10 ml) of liquid dish soap Swish the water around to create suds Unplug the drain Turn on the garbage disposal and let it process the soapy water Turn off the disposal when the water has drained out Once you’ve soaked the garbage disposal housing and loosened any food particles that might be trapped, you can scrub the disposal to dislodge any crumbs that are still stuck. To scrub the visible parts of the appliance:  Rinse a dish wand or scrub brush with water Pour a liberal amount of liquid dish soap onto the brush Scrub the accessible parts of the garbage disposal, including the rim in the sink basin and the inside of the drain Put at least 10 ice cubes into the basin where the garbage disposal is. Cover the ice cubes with ½ cup (96 g) of coarse salt. Turn on a slow stream of water, turn on the disposal, and push the ice cubes and salt toward the drain. Run the disposal until the ice cubes and salt are gone. The ice cubes will help dislodge any stuck-on food particles, and the salt will scrub the impeller blades and remove possible odor sources. To flush out any leftover debris or remnants, turn the cold water on full blast and direct the stream into the garbage disposal drain. Turn on the garbage disposal and let it and the water run for one to two minutes. Always turn the water on before running the disposal, and turn the disposal off before shutting off the water.

Summary:
Remove clogs. Soak the garbage disposal in soapy water. Scrub the visible parts of the appliance. Scrub the inside of the unit. Flush the appliance with cold water.