Terrible smells in new house I have moved into

[Stigster]

If the AAV has failed closed, there is a good chance the flushing of toilets or emptying of basins could pull traps elsewhere. When you flush a toilet do you get any gurgling noises or change of water level at a second toilet (if you have one) or at any sinks or basins?

Are you still searching for the location of any AAV on a stub stack hidden somewhere?

 

[keira01]

If the AAV has failed closed, there is a good chance the flushing of toilets or emptying of basins could pull traps elsewhere. When you flush a toilet do you get any gurgling noises or change of water level at a second toilet (if you have one) or at any sinks or basins?

Are you still searching for the location of any AAV on a stub stack hidden somewhere?

Yes there have been some strange water levels in toilets and a thudding noise on one of them after the flush and Yes I am searching for the location of a hidden stub stack which I think must be behind the plastered walls in the main bathroom at the back of the toilet. We put in an pipe extension off a visible part of the soil stack downstairs to outside in the hope it would solve the smell but with an idea it may also mean capping off the actual soil stack. Unfortunately this means will have to disrupt walls but what you are saying sounds right - the smell is intermittent and can happen twice a day, once a day and then not at all for three/four days.