Weird house smell

[RobS]

Hello,

That sump pump down there may be the culprit. We put it in when building the house in case we wanted to add a toilet later. it pumps into the pipe that runs to the septic and there's no trap between the pump and the crawlspace- the furthest I can trace the pipe. So if there's no trap in the crawlspace, or in the line from the crawlspace to the septic tank, should there be?

John

Another possibility John...

I just put in a sewage pump for my basement bath. Sealed pit lid with vent. If your pit is not vented, or inadequately vented, it could pull enough vacuum during the pump cycle to pull water out of the traps.

Good luck!