Why Does My Bathroom Sink Smell When I Run Water

## Why Does My Bathroom Sink Smell When I Run Water?

If you've ever noticed a foul smell coming from your bathroom sink when you run the water, you're not alone. This is a common problem that can be caused by a variety of factors. In this article, we'll explore some of the most common causes of bathroom sink smells and provide some tips on how to fix them.

### 1. P-Trap Blockage

The P-trap is a curved pipe under your sink that holds water to create a seal and prevent sewer gases from entering your home. If the P-trap becomes clogged with hair, soap scum, or other debris, it can cause water to back up and create a foul smell.

### 2. Clogged Drain

A clogged drain is another common cause of bathroom sink smells. When water can't drain properly, it can create a breeding ground for bacteria and other microorganisms that can produce foul odors.

### 3. Dry P-Trap

If your bathroom sink is not used regularly, the water in the P-trap can evaporate, which can break the seal and allow sewer gases to enter your home. This can create a foul smell when you run the water.

### 4. Corroded Pipes

Over time, the pipes under your sink can corrode, which can create small holes that allow sewer gases to leak into your home. This can be a serious health hazard, so it's important to have your pipes inspected and repaired if you suspect they may be corroded.

### 5. Bacterial Growth

Bacteria can grow in the moist environment under your sink, which can produce foul odors. This is especially common in areas with high humidity or poor ventilation.

### How to Fix Bathroom Sink Smells

There are a few things you can do to fix bathroom sink smells, depending on the cause of the problem.

* **Unclog the P-trap:** To unclog the P-trap, you can use a drain snake or chemical drain cleaner. Be sure to follow the manufacturer's instructions carefully. * **Unclog the drain:** To unclog the drain, you can use a plunger or a drain snake. Again, be sure to follow the manufacturer's instructions carefully. * **Fill the P-trap:** If the P-trap is dry, you can fill it by running water into the sink for a few minutes. * **Inspect and repair corroded pipes:** If you suspect that your pipes are corroded, you should have them inspected and repaired by a qualified plumber. * **Clean the area under your sink:** To prevent bacterial growth, you should clean the area under your sink regularly with a disinfectant cleaner. Be sure to wipe down all surfaces, including the pipes, drain, and P-trap.