On 24/01/20 19:31, R D S wrote:
Bog room was stinking at work, turns out there was a blockage but as the
pan itself wasn't backing up there's plainly scope for leakage somewhere
along the pipework under the floor.

I've unblocked it, it's all running freely, the smell has gone.
I can't decide if I can be arsed exploring, there's space issues and
much boxing in.

Just wondering what others would do?

Depends if you are willing to spend a little. What about getting someone
in who has CCTV? That could be pushed along the pipes to see if there is
anything obvious which could have led to the blockage, and might do again.

--

Jeff