The trap is found under the kitchen sink.
Kitchen sink smells like sewage.
There is soap hair and used toothpaste spits.
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.
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.
This image shows a very basic household plumbing system.
Notice that they are all connected to one another even the sink a.
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.
Sewer gases are escaping up the pipe due to a problem with the u bend.
A typical sink 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.
Even when we diligently use a sink strainer or garbage disposal we work our kitchen sink drains hard.
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.
This is not only irritating but it can also be a health hazard.
You can do some activities yourself to find the cause and correct the problem before you call a plumber.
The smell is like rotten eggs.
The plumbing in your house is designed to contain harmful gases flush away sewage and provide you with clean and potable water.
This can mean one of two things.
The sink trap or the plumbing vent.
Bathroom sink drain has all the organic matter that flows down with the water.
This usually happens at one of two places.
This smell is leaking in from the sewer through the drain.
How to get rid of sewer gas smell now if you smell sewer gas you have a different problem.
According to research the bathroom drain is the primary reason why bathroom sink smells like sewer.
It is always a sewage like odor or rotten egg smell.
All of the large black pipes in this image are waste pipes which lead to the sewer or septic system.
The sink trap if you look under your kitchen sink you ll see a sink trap.