Step one: run hot water for two minutes. That refills the P-trap and flushes out gunk. If that doesn’t work, pour a cup of white vinegar down the drain, let it sit for 15 minutes, then flush with boiling water. It’s like a spa treatment for your sink’s soul.
If you have a garbage disposal, grind up a lemon or lime. The citrus acid attacks the bacteria, and the smell turns from “sewer” to “fancy cocktail party.” Just don’t invite the stink back.
Still stinky? Check under the sink for leaks. A tiny drip can create a puddle that grows mold and bacteria, which smells uncannily like sewer gas. It’s a “hidden swamp” situation. Use a flashlight and your bravest attitude.
Why Does It Smell Like Sewer Under My Kitchen Sink at Jade Stainforth blog
When to Call a Pro (Because You’re Not a Plumber)
If you’ve done all the above and the smell is still partying in your kitchen, it might be a broken pipe or a blocked vent stack. That’s when you call a plumber. They’ll snake a camera down your drain and charge you enough to make you weep, but hey—no more stink. Think of it as an investment in your nostrils’ future.
And don’t worry: most plumbers have seen way grosser stuff than your sink. You’re not the first person to have a smelly kitchen. You’re part of a proud, smelly tradition.
