Leather is well-known for its durable surface and attractive appearance, both of which make it ideal for use as seating in cars and household furniture. Unfortunately, leather has a tendency to smell, either due to the tanning process that is used to create it, the chemicals it was treated with during manufacturing, or because the fabric has absorbed odors from the people and items around it. In any case, getting odors out of a leather seat can take some patience and effort on the part of the seat's owner.
Wipe down your leather seat with a damp washcloth, and inspect it for potential causes of the odor. Spilled food, drinks, sauces and other substances that have been left on your leather seat may be causing the odor and need to be cleaned off immediately if discovered.
Clean the leather seat with a high-quality leather cleaner or soap. Rub it into the leather with a washcloth, and then wipe the cleaner off with a dry, clean cloth.
Take the leather seat outside, and allow it to air out for several days. If the seat is in your car, open the windows or doors, and use fans to blow air through the car. Airing out leather is one of the most effective ways to help fade odors.
Apply leather conditioner to the seat with a clean washcloth. Allow it to soak in.
Place activated charcoal or baking soda underneath the seat to help absorb the odor.