Not many of you worked in catering then. The thing about fridge temperatures is that if they are low enough, they can stop germs proliferating. The germs will be there on the food packaging and the raw food that you put in the fridge. They just will not grow exponentially if you keep your fridge at 5 degrees or below. I've now read stuff that suggests that people our age should not eat soft cheeses because of the risk of listeria.
The fridge is thought to be the most germ-ridden item in the house. Apparently loos are kept much cleaner. I think I had better add fridge cleaning to my ever-increasing list of Useful Things for Absent to Do.
I cleaned mine a couple of weeks ago when my sister was coming to stay. There were some very interesting relics at the back of the shelves. Some were completely unidentifiable.