Smell From Bathroom Sink Drain

A smelly bathroom sink drain is a common problem that can be caused by a variety of factors. The most common cause is a buildup of hair, soap scum, and other debris in the drainpipe. Over time, this debris can create a blockage that prevents water from draining properly. As the water sits in the drainpipe, it begins to decompose and produce a foul odor.

Another common cause of a smelly bathroom sink drain is a problem with the P-trap. The P-trap is a U-shaped pipe that is located under the sink. It is designed to trap water in order to prevent sewer gases from escaping into the bathroom. If the P-trap is not properly sealed, sewer gases can leak out and cause the drain to smell.

Finally, a smelly bathroom sink drain can also be caused by a problem with the vent pipe. The vent pipe is a pipe that runs from the drainpipe to the roof of the house. It is designed to allow air to enter the drainpipe in order to prevent a vacuum from forming. If the vent pipe is blocked, a vacuum can form in the drainpipe and cause the water to drain slowly. As the water sits in the drainpipe, it begins to decompose and produce a foul odor.

There are a number of things that you can do to fix a smelly bathroom sink drain. If the smell is caused by a buildup of hair, soap scum, and other debris in the drainpipe, you can try to clean the drainpipe with a drain cleaner. If the smell is caused by a problem with the P-trap, you can try to tighten the seal on the P-trap. If the smell is caused by a problem with the vent pipe, you can try to clear the blockage in the vent pipe.

If you are unable to fix the problem yourself, you may need to call a plumber. A plumber can diagnose the problem and recommend the best course of action.