Here’s what we recommend to get rid of and prevent garbage disposal smell. Our first piece of advice is to regularly insert orange and lemon rinds into your disposal. The zest and oils from these fruits will both clean your garbage disposal and leave a fresh scent behind.
Another thing you can do is freeze some vinegar into ice cubes and toss them into the disposal. The ice will sharpen its impeller arms while killing any odor-causing bacteria naturally.
Baking soda is another natural household cleaner you can use. Pour 2-3 tablespoons down the drain and let it sit for a few hours before washing it down with water.