bad odor

A few years ago we added onto our house. The addition now sits on part of what was the backyard. The sewer clean out pipe is now covered by the addition, but it was capped off and relocated by a professional plumber. Each fall when the temperatures begin to drop a bad smell comes from that...

Hi all, We recently had our house remodeled and built 2 new bathrooms. There is a really bad smell coming from one of the bathrooms, apparently from the tub. The more we use the bathroom, the worse it smells. We tried vinegar, etc., but it appears to be an incorrect plumbing. The contractor...