septic smell from sink in powder room

Our powder room (Irving model) bathroom has a damp septic smell like stagnet water coming from the overflow hole in the sink. Our neighbors said they had the same problem thinking maybe there was a leak they were not seeing, but the plumber they called said no and that those type of sinks tend to trap water. This is odd to me. Anyone have this problem or have suggestions how to rid the smell?

Thanks!

 

We had a problem with methane type smells coming from several of our sinks. Yes it smelled like someone let one rip really bad when we turned on the water. Anyway, I could not figure out what it was so I was talking to my neighbor who had the same problem. He had a plumber come out and the plumber said to put bleach down the drain and shut the stopper. Let it sit for a few hours then run the hot water for a minute or two. Worked like a charm. No more nasty smells from our sinks.

Just in case anyone else had that problem as well.

 

You can also try a granulated enzyme drain cleaner. Excellent alternative to heavier chemical products such as Drano.

And, obviously make sure your trap is installed correctly and is the correct size. If the problem developed recently I would think it's not the trap. But if it is a new home, could be the problem.

 

Actually, on our walk through, the guy said that we should flush every toilet and run every sink for a few seconds once a week throughout the house so it wouldn't smell like that. I heard that model homes can have that smell sometimes because they don't run things alot in every room. I forget the reason why he told me it happens

 

Hummm, my BS meter just went off. I've never heard of such a thing.

 

if you don't use a sink or a shower/tub for long enough, the water in the P drain can evaporate out and allow sewer gas to come in. I don't think that would be the case in the powder room, though. I would think it would get enough use.