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.
Kitchen sink smells like sewer gas.
If you are smelling sewer gas in your kitchen something has gone awry with the system.
Sewer gas is a byproduct of the breakdown of natural human waste.
Sewer or septic pipe leaks.
One common cause of sewer gas leaks comes from damage to your sewer or septic pipes.
First inspect whether your bathroom sink is designed to have an overflow mechanism.
The best plan is to locate the break in the pipe or pipes and stop the sewer gas in the house.
They work trapping water inside the curve and blocking the gas from traveling back into the house.
That there is a trap.
Finally the blockage in the sink overflow could be the reason why bathroom sink smells like sewer gas.
What is sewer gas.
This is not only irritating but it can also be a health hazard.
If the sink gets overfilled the overflow mechanism offers some relief.
That water keeps sewer gas from making its way into your home.
The sink trap if you look under your kitchen sink you ll see a sink trap.
A typical sink trap.
O if you smell sewer gas check.
Sewer gas and its smell is obnoxious.
Your pipes could be leaking from rust corrosion a blockage or holes along the pipes or pipe joints.
The trap is so called because it traps a little water in the part shaped like a u.
Common blockages tend to be caused by tree roots grease and items that shouldn t have been flushed down the drain.
The plumbing in your house is designed to contain harmful gases flush away sewage and provide you with clean and potable water.
Sewer gas is an odor that can come from your household s septic or sanitary sewer system.
If the trap is dried out the sewer gas has a clear path into the house.
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.
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 comprises a mixture of gases including hydrogen sulfide ammonia and more.
The hydrogen sulfide in sewer gas is what gives it.
You can do some activities yourself to find the cause and correct the problem before you call a plumber.