Air out the item. Take it outdoors and allow fresh air to circulate around it for at least 24 hours. This may slightly reduce the smoke odor, and is safe for all fabrics.
Steam the item with a mix of vinegar and water. Check the care label for the item to make sure the item can be exposed to steam. Fill the tank of a steamer with equal parts vinegar and water, and use the steamer according to manufacturer's directions, holding the nozzle at least 6 inches away from the item.
Have the item dry cleaned, if possible.
Use a fabric odor eliminator spray. Test the spray on an inconspicuous area to make sure that the spray won't stain the fabric. Spray a fine mist evenly over the item.