Replacing the flooring is not an option or I would 100% do it, I have even offered to pay for the replacement. HA house, downstairs loo is a wet room but not in use or ever been in use as a wet room as far as I know. No shower fitted just a plate where one can be attacked if ever needed all plumbing and electrics are present in the wall. House is 3 years old I've lived here nearly 18 months and inherented the wee smell from the last tenant. It smells like the men's toilet at the pub and is absolutely vile. As soon as the door is open the smell hits you in the face it's so strong you can smell it in the whole downstairs when the door is opened. The window has been removed and that wall tiled over so no fresh air, I run the extractor fan 24/7 which does help slightly but I want/need to remove the smell, so plesse hit me with your best suggestions I will try anything at this point.