If your interior isn't smelling like a new car anymore, it could be those bean burritos, drive-thru French fries, or maybe your dog has been smoking your fine Cuban cigars again. Here is a wonderful scent to freshen the air. Our Vanilla Scent offers a fresh natural air to your vehicle. The scent should last about a week with just a couple sprays under each seat. I saturate a small sponge and place it under the seat near an air vent so the wonderful smell flows throughout the cabin.