My fridge/freezer has been turned on and running since I last moved house several years ago. I clean the shelves/bins in the fridge every couple of months, or when something is spilled, but the freezer hasn't been cleaned for ages. It doesn't particularly smell bad and it's not iced up, but there is a bit of that 'freezer smell'.
Should I clean it?
Is there any worthwhile cleaning procedure other than removing all the food and letting it come up to room temperature?