Your first step of laying them out to breathe is great. I might suggest that you spray with light mist of water and run thru your dryer for just a few minutes. Also, if you have extra beds that no one is using then you can lay them on beds instead of folding up and making more creases. Also, never store in plastic as this will possibly cause mold because of the condensation in the plastic. Good luck on your endeavor of reviving the quilts.