Improve the air quality in your home with an Allergen, Bacteria & Virus Filtrete Smart Air Filter. It attracts and captures microscopic particles such as bacteria and particles that can carry viruses. Filtrete furnace filters also work to remove large particles such as mold spores and pollen, making it a must-have product, especially for asthma and allergy sufferers. The Bluetooth-enabled sensor pairs with the Filtrete smart app to help track filter life and determine the optimal time for a replacement. The Filtrete allergen reduction filter is available in a range of sizes, so you can select the right fit.