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