This smell is leaking in from the sewer through the drain.
Kitchen sink smells of sewage.
Bathroom sink drain has all the organic matter that flows down with the water.
The sink trap or the plumbing vent.
A typical sink trap.
A sink overflow is a hole located either underneath or across from the faucet.
In areas with hard water mineral buildup can also prevent the overflow from draining.
This usually happens at one of two places.
If the p trap is blocked or dry it would cause a sewage smell to emanate from the sink.
If you try all the methods described below but still smell sewer gases professional help may be needed.
It works by holding water at the bottom of the curve to block the gases from going the wrong way.
Inevitably food particles grease and other not so lovely things make their way into the drain and we wake up one morning to a foul smell coming out of the sink.
It is always a sewage like odor or rotten egg smell.
It can be a major source of sewer gas smell in the sink.
How to get rid of the smell.
The sink trap if you look under your kitchen sink you ll see a sink trap.
If the smell is coming from a floor drain pour a pitcher of water down the drain to restore the proper function.
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.
There is soap hair and used toothpaste spits.
The hydrogen sulfide in sewer gas is what gives it its signature rotten egg smell.
It s prone to the same accumulation of bacteria soap scum and hair that can clog and produce foul smells in a sink.
If the smell is coming from a sink simply run the water for a few seconds to restore the trap.
When you smell sewer gasses coming from the area around your kitchen sink the smells are not only offensive but they can put anyone in the house at risk until the source of the sewer gas leak is found and taken care of.
You can do some activities yourself to find the cause and correct the problem before you call a plumber.
It blocks sewer gases trying to travel inside your house from the exterior systems.
According to research the bathroom drain is the primary reason why bathroom sink smells like sewer.
Sewer gas isn t necessarily toxic at low levels.
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.
However chronic exposure or higher levels of exposure can.
If the trap is dried out the sewer gas has a clear path into the house.