Smells like mold, but I don't see any!

[strmis]

My covers smell moldy. They were sitting around in the hamper a bit too long, i guess. I've washed them twice, but it still smells musty. I don't see any mold.

Is this going to be a permanent problem? How do I get rid of the smell? If it smells like mold does that mean there IS mold?

[My3guys]

Did you strip them? If not, that is always a good idea.

However, I think a better bet might be to try washing them once and then sitting them outside under the hot, bright sun for a day or two. The sun kills everything and will make them smell much better.