The fact that the combustion point in the flue had been snapped off and then filled with god knows what was more of a reason to turn it off id have thought.
Reminds me of a site in Gillingham when I was a kid. Bog was wooden privy hut on 4 crossed planks over deep pit. You walked across the planks to the hut and did your business through the hole in the middle. Fine until one of the planks broke. Poor bloke inside was never the same
Went to first fix a bathroom today for a fella who's DIY ing it, he said when I got there I've drilled the holes ready for you and done the waste, but I haven't got any glue for it can you do it I said yeah that's fine, took the waste out to solder up my too feeds and found this, can you spot the problem