Community Alumni
Mar 16, 2016OK I will take a shot at it a couple of thoughts from past experience from me and others.
You have a leak in the tank black or grey leaking into the sub floor. Co-worker had that problem.
The vent pipe is or has been pulled from the tank black or grey and is now venting into the sub floor.
The vent pipe is too short or was put together in more than one piece and that joint has come loose allowing gases into the wall or sub floor.
You have a vent issue where the tank pressurizes like an odd shaped tank where the levels in the tank block the vent causing the tank to pressurize. This happened to me I had grey water blow back through the bath sink.
You have a rotten potatoe in the pantry. :B
Your hot water tank has stagnated and is putting out hydrogen sulfide that does stink, long shot here because you do use the hot with the shower, assuming.
A battery that is going south will also smell up the place.
You have a dead animal in the heater vent at the bathroom
Good Luck
JimR