I've found that a trip through the washing machine with your regular detergent usually does the trick very nicely. Alos, Febreze has a laundy additive - I've not used it on a quilt - but it gets the stink out of men's work and boy's gym socks very well. LOL. You don't add much so I wouldn't be too worried about it hurting the quilt - maybe an extra rinse if you are.