According to research the bathroom drain is the primary reason why bathroom sink smells like sewer.
My bathroom sink smells like sewer.
Like many others your sink probably has a hole at the top that allows fast drainage when the sink is full of water.
It works by holding water at the bottom of the curve to block the gases from going the wrong way.
Sometimes it happens that the sewer smell in the bathroom comes from the sink.
A rancid odor coming from your sink drain may just be coming from debris in the p trap but if it smells like a sewer it probably means venting problems in your drain system.
The strong smell can quickly fill your bathroom with an unpleasant odor.
If the odor emanating from your bathroom sink smells strongly of sewage then sewage may be the actual culprit.
The possible reason is clogging of the pipe that leads to dry p trap.
Remember all your water waste eventually drains to the same place so the runoff from your bathroom sink will be sharing a pipe with sewage down the line.
If the p trap is blocked or dry it would cause a sewage smell to emanate from the sink.
Sewer odor in bathrooms has several different causes.
What causes a sewer odor in the bathroom.
Determining the cause of the sewer smell can help you prevent it from returning in the future.
The most common reasons are a backed up sewer cracked or rotted pipes that leak clogged drains pipe connections are too loose the vent pipe is backed up or too short there is an old wax ring or a dry trap.
A sewer odor that emits from the bathroom sink drain can cause you to panic.
While it may smell dangerous the sewer smell usually consists of problem that you can fix yourself.
Bathroom sink drain has all the organic matter that flows down with the water.
It blocks sewer gases trying to travel inside your house from the exterior systems.
It is always a sewage like odor or rotten egg smell.
When the vents are blocked flushing a toilet can create sufficient vacuum to suck water out of the trap and allow sewer gases into your home.
Bathroom sink smells like sewer.