At my wits end with this one. I noticed a smell in my fridge at end November, sort of slightly off food/slightly fishy.
I washed out the fridge, but the smell returned.
Since then I have washed the fridge with white vinegar, bicarb, various cleaners etc.
I can not get rid of the smell - sometimes it's overwhelmingly strong, others it's quite mild. I can't get to the bottom of it.
(There's nothing under/behind the fridge). I can't see any drip tray/similar that could be blocked either.
Any ideas? It's driving me mad.