If the P-trap isn't working properly, sewer gasses can make their way into the bathroom and cause your sink to stink. Your sink should also have a vent that gives backflowing gases somewhere to go. If the sewer smell in your sink is caused by a blocked air vent, you may need professional assistance.,
Sewer odor comes from the breakdown of human waste and includes harmful gases like hydrogen sulfide and ammonia. Small doses of these gases won't harm you, but chronic exposure can be toxic. Any time your house smells like sewage, you need to identify the problem.
Cracked pipes: Degraded, broken or cracked pipes can allow sewer gas to escape through them and into your home. Leaks: Improperly placed pipes or vents can lead to leaks in your plumbing system, which in turn can cause sewer gas to escape inside your home.Jan 20, 2020
A smelly sink is usually caused by bacteria build up from grease, fat and food which have been flushed down the drain. These will then get stuck in the pipes causing the familiar rotten egg smell.Jan 6, 2021
To eliminate odors coming from a dry p-trap, pour half a gallon of water into the trap to restore the barrier. It will prevent the odors from seeping through the drain. Another helpful method is to add a cup of white vinegar bleach to get rid of larvae and slow down the evaporation.Dec 9, 2020
One of the common reasons is drain obstacle or drain clogs. An block in the drain will often prevent water from flowing freely through the pipes. Oftentimes, the water become stuck along with other solid materials. And once these materials start to rot or decompose, it produces a poop-like smell.
Baking Soda and VinegarnnWhile your water is heating, pour one cup of baking soda and one cup of vinegar down your drain, and let the mixture sit. After about ten minutes, flush the drain with boiling water. Finish up by flushing the drain with cold tap water, and wait to see if the odor is gone.Jun 28, 2021