Aprilaire has added activated carbon to the Healthy Air 13+ Filter because family life is filled with laughter, love, and ? sometimes ? unpleasant smells. For that last one, Aprilaire is here to freshen up your healthy home. The Aprilaire 413CBN Healthy Air 13+ Air Filter helps trap pet and cooking odors, as well as odors from Volatile Organic Compounds (VOCs). Aprilaire 413CBN also removes common airborne allergens as they pass through the MERV 13 filter including airborne pollen, mold spores, bacteria, pet dander, dust particles, and dust mites. Refresh your healthy home environment for your family and pets.