I had a slow leak from a radiator, which has now been replaced but there is still a wet smell in that part of the house.
I have no idea how long the leak was going for, as it was barely noticeable, so it could have been since before we moved in (there was about 6 months between us completing and moving in and been here a year)
The floor has become slightly bumpy, which isn’t an issue in itself as it’s a tiny part, edge of the room so not noticeable. But I’m worried there’s mold underneath it and that’s what the smell is 
Is there anything I can do without having to lift the floor up? The floor we have is no longer stocked so if we bring it up and damage it in the process we’d have to replace all of downstairs or have it mismatched, and neither option is ideal.
I’ve cleaned the floor loads of times since replacing the rad, so it’s not just an old smell and there are no other visible leaks to be causing it.
Any ideas?