If the garment is washable, add baking soda to the wash cycle. At the rinse cycle, add 2 cups white vinegar and allow to rotate several times to distribute the vinegar throughout, then stop and allow to soak for 2 or more hours. Run through a plain water rinse. Dry on the "fluff," or "air" setting with no heat (to maximize air exposure) and add a fabric softener sheet or two.
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