I just moved home after a six month secondment. While I was away, I let my friend's son live in my flat - the flat he was in had to have major emergency repairs done, and he was going to be homeless.
Moved back, and it's all been kept tidy and clean. Except for the fridge, which stinks. Smells like there has been food in it that has gone off. I've emptied everything out, and cleaned it three times, but I can't get rid of the smell. Any advice? I'd rather not be replacing a fridge freezer at this time of year.