the op was on the thread yesterday - seemed like loottsa time for photos since wednesday.
an simple replies to my questions.
not at the property usly means not at the property not on holiday.
Just got back tonight and it doesnt seem to smell... will see how it is after a few days and whether it returns... if it does it could perhaps be plumbing but there really is no real pattern to it or specific area its strongest
So an update, got rid of a rug that was in the hall (was fairly old but didnt seem to whiff) and also switched off the fridge, defrosted it and gave it a really good clean. (I had previously emptied the drip tray, but not thoroughly cleaned it). Fridge is back on now and the smell is gone! And has been for a few weeks now.
Im not sure unfortunately if it was the fridge or the rug, but im just pleased the smell has gone and i didnt have to rip the floor up