Smell of sewage from bathroom sink pipe?

[nonameface13]

Hi, I smell a strong odor coming from the pipe behind my half-bath pedestal sink. I have no idea what it could be. I used liquid plumber... I used baking soda and vinegar mix... the smell is more noticeable the more humid it is outside, by the way.

 

[Twowaxhack]

Pour some bleach down the overflow hole in the lavatory. Do that everyday for about 3 days.

You could remove the stopper and inspect the piping from the outlet of the lavatory to the ptrap. Look in there with a flashlight.

Clean that section of pipe up. How does it drain ?

 

[nonameface13]

Pour some bleach down the overflow hole in the lavatory. Do that everyday for about 3 days.

You could remove the stopper and inspect the piping from the outlet of the lavatory to the ptrap. Look in there with a flashlight.

Clean that section of pipe up. How does it drain ?

Thank you! I removed the stopper and looked down- pls see pic. Looks clear I think.

To be sure, I haven't had any drainage issues. When I turn on faucet, waters seems to go down fine and quickly.

The smell is definitely coming from the area where the piping meets the wall (second pic).

Should I continue with starting the bleach suggestion down the overflow hole? Thanks again.

 

[havasu]

Vinegar, baking soda, liquid plumber, bleach...?

Just heed caution and if/when a plumber is needed, please list everything you've thrown down that sink and let that plumber know....for his safety.

 

[Twowaxhack]

The smell may be coming out of the wall or at the wall connection. Sometimes a pipe will leak sewer gas but not water.

Worse case scenario is you have a drain leak in the wall or an open pipe.

You could carefully slide that chrome escutcheon away from the wall and take a look. Maybe take a pic for me.

The chrome brass ptrap can be thin so disturbing that can definitely go south quick and it’ll have to be replaced. That’s usually not a real easy job with a pedestal lavatory for most. Just wanted you to be aware of possibilities.

 

[nonameface13]

Thank you my friend! Much appreciate your support!