If it smells near the garbage disposal run it to see if there is a break in the seal or piping.
Under my bathroom sink stinks.
If the trap is leaking the water level inside it may be to low to seal out sewer gases.
Step 1 inspect the p trap underneath the sink for leaks.
A smelly bathroom sink drain is a common problem as odor residue and bacteria accumulate regularly in the drain.
One of the most common causes of odors in the bathroom is dry p trap.
If the p trap is blocked or dry it would cause a sewage smell to emanate from the sink.
Also run your hand along the length of the pipe to detect any moisture.
Removed the pvc under the sink to see if something was caught in the p trap when i removed the pvc from the drain connection in the wall i could smell roots dirt smell coming from the drain pipe which.
How to get rid of the smell from the bathroom sink overflow.
Squirted bleach in the overflow of the sink and flushed w hot water.
The p trap is a u shaped pipe located under the sink.
Luckily keeping the drain clean and odor free is a fairly easy task and requires only a couple of inexpensive household ingredients.
There is soap hair and used toothpaste spits.
It is the accumulation of such used substances that lead to the emission of the offensive smell.
If the sink is in regular use you can eliminate evaporation as a cause of the smell so it is either blocked or there is a leak preventing the water from getting to the bottom of the trap.
Poured vinegar baking soda and salt down the sink drain also bleach.
But the question is.
Check for standing water on the floor or cabinet base beneath the u shaped pipe the p trap under the sink.
According to research the bathroom drain is the primary reason why bathroom sink smells like sewer.
Bathroom sink drain has all the organic matter that flows down with the water.
Run water to see if any spots are dripping.
You can get rid of funky smells coming from underneath your sink by clearing out the sink s cabinet checking for drippage and spillage.
Make a habit of combing your hair regularly before shower and clean the drain once a week with baking soda and vinegar to avoid future sewer smell in the bathroom.
How can you inspect the bathroom sink drain for the stink.