Bad odor is coming from the outside inQuestion:A pumper I know has a problem with septic odors appearing inside houses. Lots of houses in a small area. Some of the houses are old, some new. The problem seems to happen in the spring and fall, on a warm day following a cold night. He says it happens in his own house, and the odor is so strong that it smells like his service truck is parked in his living room. My thought is that it’s due to lower atmospheric pressure inside the house drawing odors into the house from outside.
