They should not have mold on them, but they do smell little.
Having said that, I am, correction: my dragon is a BIG fan of them. I have been feeding them regularly and my beardie grew like crazy. Keep in mind I also dust them with vitamins and calcium and feed always a good variety of staple vegetables and fruits, as well as the occasional live feeder, such as silks etc..
If nothing else it is a good emergency food, also I prefer to freeze unused as that avoids any spoilage.