Healthy bodies produce sweat in reaction to exercise, a rise in temperature, or stress and anxiety. Sweating regulates body temperature and maintains a balance of fluids and chemicals, such as sodium and calcium. Sweat itself is odorless, but when it is broken down by bacteria, odor arises giving off the characteristic scent of body odor. Unfortunately, the scent can get trapped in delicate fabrics and reappear with a vengeance when the article of clothing is worn again. Removing the odor during laundering is key to keeping your garments smelling fresh and odor free.
Pretreat garment with an enzyme-based product soak or scrub the underarm area with laundry detergent. Launder as usual.
Place the article of clothing in a bucket of warm water and salt if odors persist after laundering. Mix 3/4 tsp. of salt to each quart of water. Allow the garment to soak overnight. Rinse it in clear water and dry as usual.
Spray white vinegar or vodka on the effected underarm area and allow it to dry to remove perspiration odors. This method may remove odors quickly, even if you do not have time to launder the fabric, making it a quick fix when you discover laundered clothes that retain perspiration odor.