The sink trap or the plumbing vent.
Kitchen sink smells of sewage.
If the trap is dried out the sewer gas has a clear path into the house.
In areas with hard water mineral buildup can also prevent the overflow from draining.
This usually happens at one of two places.
How to get rid of sewer gas smell now if you smell sewer gas you have a different problem.
It is always a sewage like odor or rotten egg smell.
The sink trap if you look under your kitchen sink you ll see a sink trap.
A typical sink trap.
This smell is leaking in from the sewer through the drain.
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 drain has all the organic matter that flows down with the water.
The hydrogen sulfide in sewer gas is what gives it its signature rotten egg smell.
If the p trap is blocked or dry it would cause a sewage smell to emanate from the sink.
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.
It blocks sewer gases trying to travel inside your house from the exterior systems.
There is soap hair and used toothpaste spits.
It can be a major source of sewer gas smell in the sink.
If you try all the methods described below but still smell sewer gases professional help may be needed.
A sink overflow is a hole located either underneath or across from the faucet.
If the smell is coming from a sink simply run the water for a few seconds to restore the trap.
Even when we diligently use a sink strainer or garbage disposal we work our kitchen sink drains hard.
If the smell is coming from a floor drain pour a pitcher of water down the drain to restore the proper function.
However chronic exposure or higher levels of exposure can.
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.
It works by holding water at the bottom of the curve to block the gases from going the wrong way.
How to get rid of the smell.
It s prone to the same accumulation of bacteria soap scum and hair that can clog and produce foul smells in a sink.
Kitchen sink smells are easily fixed by unclogging blockages cleaning the pipes with a ready made chemical or home made solution or fixing the u bend.
Sewer gas isn t necessarily toxic at low levels.