Fill your bathtub with steaming hot water.
Add 1 cup of distilled white vinegar to the hot water.
Place the wool pants on a clothes hanger and hang them over the steaming water and vinegar mixture.
Close the bathroom door and let the pants sit in the steam bath.
Remove the pants from the steamy bathroom after 30 minutes and hang them to dry in an area away from direct sunlight.
Cool Breeze Method
Place wool pants on a clothes hanger.
Hang the pants in a cool, dry outdoor area (a screened-in porch is ideal).
Allow the pants to air out overnight. Air out for a second night if the odor persists.
Biological Odor Eliminator Method
Purchase a biological odor eliminator. These odor eaters often contain enzymes and bacteria that neutralize unpleasant odors.
Stand at least 2 feet away from the wool pants and spray them with two or three pulses of the odor killer.
Hang the treated pants to air out in a cool space with good circulation.