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Need some assistance in diagnosing/fixing a smell in the front of my basement. Not sure what it is, and before I start ripping up the floor or punching holes in the walls to see behind them for mold, I could use an expert to come and help determine the origin of the smell.

Mold? Not sure, but it doesn’t smell musty to me. Something else.

From the heating valves? Perhaps dirty water in the steam heat system is coming out of the valves in the front of the basement and making the smell?

Sewer trap issue? Not sure, doesn’t smell “poopy” ish; but that could be it.

Gas/Vapor? Not sure. The meters for the gas are in this area, could it be a slow leak? I thought that gas was odorless, but have heard that the gas company adds something to it to make it noticeable.

Don’t know what to do. Keep the window open in this area from time to time, have put in a de-humidifier, have put in an air-purifier to no avail.

Please help if you can. Am ready to hire someone immediately to assist.