To get rid of a bad smell in the kitchen sink drain, start with a baking soda + vinegar flush, follow with hot water, run lots of cold water through the disposal with citrus peels, and inspect the P-trap for trapped food debris. If the smell persists, the issue is likely deeper in the drain line and needs professional cleaning.
DIY steps
- Pour 1/2 cup baking soda + 1 cup vinegar down drain, let sit 15 min
- Flush with hot water
- Run cold water and grind citrus peels in disposal
- Clean splash guard with a brush
- Inspect and clean P-trap if accessible
If the odor persists, the line probably needs a professional clean. Schedule via drain cleaning, or step up to hydro jetting for grease buildup.
