A day or two after we moved in we both started to think our bathroom really smelt of stale wee. Now our bathroom had some rather lovely cork floor tiles in it, so the assumption was that the smell was a residual from those. A few days and a lot of scrubbing later we realised the toilet was leaking. Moreover, it was leaking from the soil pipe. More moreover, it was leaking from behind a boxed in part of the bathroom. Joy. A few hours later I had managed to pull all the floor tiles up to find the leak had made it a disturbing distance away from the toilet. Double joy. A bit later I smashed the boxed in part away and found the leak. It was kicking out about half a shot every time the toilet flushed. The thing is, where it was leaking from makes me think it’s been leaking for years. Yummy.
Much bleach and a plumbers visit later we had a functioning toilet once more. Luxury.