Pour 1 cup of water into a bowl.
Pour 1 cup of rubbing alcohol into the bowl of water.
Dampen a lint-free cloth in the water and alcohol mixture and wring it out to remove excess.
Wipe down the leather with the damp cloth. Look for any areas of mold or mildew in the process. The mold may appear fuzzy and white, greenish-blue or it may have the appearance of black splotches.
Dampen a soft bristle brush with the water and alcohol solution and gently scrub any areas of mold or mildew. Use a circular motion. Wipe the area with the damp cloth once scrubbing is complete.
Allow the jacket to air dry and air out for 48 hours.
Fill a bowl with warm soap and add a few drops of antibacterial soap if the odor persists.
Dampen a cloth with the soapy solution and rub down the leather, using a circular motion.
Wipe the leather jacket with a dry cloth.
Apply leather conditioner to a lint-free cloth and rub it into the leather using a circular motion.