Horrible damp smell through the whole house.
I had black stuff growing up my toilet pipe
(the thin one that brings cold water to the loo), on the wall around it and on the kitchen ceiling directly below it. I kept cleaning it and it kept coming back. I think the whole place has just got thoroughly soaked from my youngest flooding the bathroom.
I have bleached it all and scrubbed and scrubbed. But I can't get rid of the damp smell. I opened all the windows for a few days (closing at night, obviously) to try to air it out. That didn't work. I cranked up the heating to 30
for 2 days solid in case it needs drying out. That didn't work.
What else?