While a slight odor may not be a big deal -- and you might ... Sewer gas escaping from the P-trap or plumbing vent pipe could also be behind your stinky kitchen sink. But if you've ruled out ...

So, how do you keep the water in the p-trap from evaporating and the air from filling with sulfuric odor? Cooking oil. It’s a little trick we’ve learned over the years at Family Handyman by ...