I have used this method to remove smoke / musty smell from paper items with good success. Baking soda doesn't mask odor, it absorbs it.
* Dump a box of baking soda in the bottom of a tupperware container big enough to hold the item.
* Put a wire rack or something in the container to suspend the item above the baking soda.
* Place the item in the container and seal it tight.
* Give it a few weeks to a month and check the item. If there is still smell, replace the baking soda with a fresh supply and give it more time.
This method should work to remove most, if not all, of the nasty smell.
Good luck!
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