Hydrogen sulfide distinguished by a rotten egg odor causes yellow or black stains on fixtures.
Kitchen sink smells like rotten eggs.
You may have noticed a foul sewer like odor from the small overflow outlet hole in your bathroom sink.
Well there are several different reasons there could be a funky smell coming out of your drain in the kitchen sink.
White vinegar and baking soda.
If the sink smells like rotten eggs you have sewer gases escaping into your home due to a problem with your u bend.
Although hydrogen sulfide is flammable and poisonous it is usually not a health risk at the concentrations found in household water.
It means that there are bacteria growing inside of the drain as well which can be unhealthy for you.
It is likely the odor is coming from the accumulation of bacteria at the end of the sink s overflow hole.
This gas usually smells distinctly like rotten eggs and can be pretty overpowering.
Generally the smell of rotten eggs comes from a sulfurous gas that is produced from a build up of gunk hair and other particles that accumulate within the drain.
Another possible reason for the rotten egg smell in your bathroom sink is outgassing.
If the sink smells like rotting food then you have a build up of food fats and oils in your pipes.
And then as it begins to decompose the smell can make its way back into your home.
So don t put grease down the drain.
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You must check if the smell is coming from the water or the drain.
One of the most common reasons for a kitchen sink to have a rotten egg or moldy smell is from grease or fat getting stuck in your drains.
When you pour grease down your drain it can congeal to the sides.
Natural gas and propane are odorless but gas companies inject them with a chemical called mercaptan that gives them a sulfur smell like rotten eggs to alert residents to a gas leak.
Most of the time you will immediately identify the smell as coming from either rotten eggs or something else rather sulfurous.
These smells are not uncommon but need to be dealt with to make your kitchen usable again.
The following is an easy inexpensive and very effective solution.