I thought I'd ask the experts for some help. One of our downstairs bathrooms has an intermittant sewer gas smell. It started last summer (a few months after we moved into a new construction home). I had the plumbers replace the wax ring and that helped some, but only reduced the smell about 50% or so. Cold weather came and the smell seemed to go away. Now that it is getting warm again, the problem has returned. There are no signs of any leaks that I can find, and there are times the smell seems worse after a flush, but not consistently. There is no odor in the tank w/ flushing (can't imagine why there would be, but worth a sniff), and I've tried refilling the trap in the adjacent bathtub (rarely used) and that also makes no difference. We are on an "aerobic" sewer/septic system here if that makes any difference to anyone. The toilet flushes well and w/o issue, but the tub does drain slow, if that matters (I suppose it could be the tub causing the smell...) Any thoughts would be greatly appreciated...
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Help with that lovely sewer smell...