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Why is my sink foul smell

Plumbing

The answer to 'why is my sink foul smell' is that a clogged drain or buildup of food, hair, and other debris in the sink trap or pipes is the most common cause of a foul sink odor. Over time, organic matter can accumulate and start to rot, releasing unpleasant smells into your home.

Other potential causes include a dried-out sink trap that allows sewer gases to escape, a leaky pipe under the sink, or bacteria growth in the drain. The odor may also be coming from food or other waste that has gotten stuck in the disposal unit or drain.

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Step-by-Step Guide

  1. 1

    Try DIY drain cleaning

    First, try pouring baking soda and vinegar down the drain, letting it sit for a while, then flushing with hot water. You can also use a drain snake or plunger to try to clear any clogs.

  2. 2

    Remove and clean the sink trap

    If the smell persists, you may need to remove the sink's P-trap and clean out any debris or buildup. Be sure to replace the trap properly when finished.

  3. 3

    Call a plumber

    If the odor still won't go away, it's best to have a professional plumber inspect the sink and pipes to identify and fix the underlying cause.

Frequently Asked Questions

How do I fix a smelly sink?

To fix a smelly sink, you can try pouring baking soda and vinegar down the drain, using a drain cleaner, or removing the sink trap and cleaning it out. If the smell persists, you may need to have a plumber inspect the pipes for more serious clogs or issues.

Is a smelly sink a sign of a bigger problem?

A foul sink odor can sometimes indicate a more serious plumbing problem, such as a sewer line clog or a problem with the vent stack. If the smell doesn't go away after basic DIY drain cleaning, it's best to have a professional plumber take a look.

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