Extremely MUSKY smell during curing. Problem?

One of my plants it curing right now and it doesn't smell like bud, it smells extremely musky, I'm not sure how else to explain the smell. Does anyone know why this could be? I've never had bud that smelt like that before.

details please, dry time, curing method, etc...

all i can tell you is let them air out for a day

It may be mould watch out for cobwebs that same thing happened to me and I lost 1/2 oz. I saved the rest by leaving them out the jar just like sleepy said. too much moisture

air em and quick!!!! You are almost surely developing mold.

well the thing is the buds are very dry and crispy; I harvested two weeks ago. Also, when I break up the nugs they smell fantastic its just when they sit in the jar.

As long as it is properly dried and there is no mold inside when you break up the nugs just keep curing burping twice a day and eventually they will smell dank. It takes time.