Wash the fabric using a cup of vinegar and warm water to remove the oils that contain the odor. If the odor is extreme consider loading the washer with the water and vinegar and detergent let it run thru the cycle but with the lid open so it does not continue the cycles... then the next day restart the cycle without draining and close the lid so it goes the full cycle. ( this assumes you have a conventional top loading machine) . Keeping the vinegar detergent water to soak after the first agitation assures the fibers have been saturated fully while soaking overnight