And therein lies the problem... sometimes you just don't notice that the cheese has mold on it until you have already added to your burger, sandwich, or other creation. I was taught to trim mold off of cheese when I was a youngster. But my family was on a limited budget, so we usually had Velveeta. When I was a kid Velveeta could last for years, hardly ever got moldy and did not even need to be kept in the refrigerator as long as you stored it correctly. This was because of the way that it used to be processed. They have changed it in more recent times. It doesn't last as long and it can definitely mold. I don't know why... planned obsolescence?
When I was a kid, if we threw out a block of cheddar because it had a little mold on it... my dad would have taken us behind the woodshed. He would even get made if we shaved the too much good cheese off to clean it off.
Some cheeses mold quickly, and others do not, and some cheeses have mold that doesn't mess up the flavor. Some foods are meant to be moldy — and it's safe to eat them; blue cheese's taste and appearance come from a mold related to the strain used to make penicillin. But they are kind of disgusting; they stain things, and help cause things to rot... Most of them completely destroy the taste of many foods. And others like the mold growing on fruits, vegetables, bread and peanut butter can definitely make you sick.
Most molds are microscopic funguses like tiny mushrooms which are also a fungus, or athlete's foot which is also a fungus. Personally, I have never been fond of mushrooms because I know what they are and it just kind of grosses me out.
bttt
Mushrooms are very good for you; high in nucleic acids.