Odor from bathroom sink
Posted by Allen Langenhuizen on July 26, 19100 at 12:30:50:
I have a vanity with two sinks in the upper bath of our tri-level home. One of the sinks has a terrible odor (smelling like rotten eggs) that comes out of the drain while the water is running. This odor was first noticed in about October last year and was only occasional. Now the odor is noticed daily everytime we run water down the drain. The home was built in summer of 1997 and the odor was not present after construction.

Occasionally the other drain has this same odor but usually only during the winter (I haven't noticed it since March).

On two occasions in the past five months I have noticed the odor at our kitchen sink. One side of the kitchen sink has a disposal but this is not the side with the odor.

I don't know what to do or who to talk to. I want to talk to a plumber, but have no clue where to begin.
Can you give me suggestions on where to begin with a plumber?

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