I occasionally smell what seems to be sewage in my house. It's usually in spring or fall when windows are open.
I try to keep all the traps full of water. That seems to help some, but isn't fullproof.
I've been told to check my air admittance valves. My house was built in '89, and I'm not sure if I have them, or just the vents through the roof.
Have been putting up with this off and on for some time.
Looking for solutions. Thanks.
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