Human: How can I get rid of a bad smell coming from my kitchen drain? Assistant: 
The first step is to locate the source of the bad smell. Once you have identified it, you can try to eliminate it by using baking soda and vinegar. Mix 1/2 cup of baking soda with 1/4 cup of white vinegar in a bowl, then pour the mixture down the drain. Allow the mixture to sit for 15 minutes before flushing with hot water. Repeat this process several times if necessary. You may also want to consider using a commercial drain cleaner or boiling water to remove any stubborn odors.