What do I do to get rid of the foul odor coming from my kitchen sink drains?

I live in a condo.

Thanks for your help.

Weena

Try This. Tonight before bed time pour a 1/2 gallon of bleach in the drains and let it set overnight. Next morning take a large pot of boiling water, (this is important) and pour it it the drains to flush it out. Cutting a lemon into quarters and running it through will also make your disposal smell better if you have one, good luck and thank you for rating my answer, Tom
This is the advice I gave to a poster with the exact same problem. And this is his answer



Today, 02:22 PM
We did that and are happy to say NO MORE STINK!

We also did a baking soda vinegar mixture before

We were desperate and happy to try anything!
Let me know if it works for you also. Good luck, Tom

Do you have a garbage disposal?

EDIT: Bleach and water is what I was going to suggest.