Got back off holiday a couple of days ago, and noticed our bathroom has developed a smell. It smells like a cat has sprayed in it, but we don't have a cat and there is no way a cat could have got in while we were away.
The toilet water level was normal, and I've checked all the traps and they all have water in them, and there doesn't seem to be any leakage from the waste pipes (anyway it's not really a sewage type smell).
Any ideas what could cause this type of smell?
TIA
-- Andy