Air out the leather. Place the leather item outside for a day to help the smoke odor dissipate.
Fill a spray bottle with vinegar. Spray vinegar on the leather item and wipe it off with a paper towel to combat lingering odors.
Place smoky leather apparel in a garbage bag. Take the lid off of a box of baking soda and set it in the bottom of the bag. Seal the bag and let it sit overnight. Check the next day to see if the odor has dissipated. If not, reseal the bag and wait another 24 hours.
Cover a leather furniture item with baking soda. Allow the baking soda to remain overnight. Vacuum the baking soda from the furniture the next day.
Clean the surface of the leather. Apply either a pH-balanced leather cleaner or a small amount of traditional shaving cream -- not shave gel -- to the surface. Use a moistened cloth to remove the cleaner or cream.
Rub sweet orange oil on the leather with a soft cloth. In addition to reconditioning the material, it will give the item a pleasant citrus scent.