I'd go with the baking soda. I've used it before to get other odors out of fabric. Just put all your unrolled rolls in a large bag, like ziploc or a clean white trashbag if you have a hugh amount of fabric, use a small box of baking soda and pour it all in, tie the bag and shake it around a bit. Let it set 2-3 days, shaking it again at least once a day, then dump everything out and shake off your fabric (but shake it off really hard, so the soda doesn't end up coating your sewing machine when you sew it.)