Odor in basement
House is less than 2 years old. Propane heat, septic system that does not require a pump. In the last month (yup, during the coldest weather) we have noticed an odor in the unfinished and perfectly dry basement. At first, I thought the cats, when they invariably escape to investigate twhat's in the basement, had maybe pooped in a corner or in a box. But, that's unlike them. I am now of opinion that we have a frozen trap or something going to septic system and what we are smelling is odor from that. This is 3BR 2.5BA house, with only 2 adults and 2 cats, so I don't think the septic is overly full. The odor doesn't seem to be worsening, but it does linger. Any suggestions are appreciated.
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