Originally Posted by fleurdelisquilts.com
Here's a trick I've read about but haven't tried:
Put the fabric in a container with a lid, add an open box of baking soda and cover. The baking soda will absorb the odor. Charcoal briquets will also work, just make sure to put them in a drawstring bag or something that breathes so the charcoal doesn't come off on the fabric. It may take several days.
Unused kitty litter will also work in the box. Or, soak some cotton balls in vanilla and crumble up some newspaper and put them both in the box. Just don't set the vanilla cotton balls on the fabric or it may leave spots.
This method will take some time, though.