You want your baby to breathe the cleanest air possible every day, but you don't want to disturb her with noisy machines. The BébéSounds® Nursery Air Purifier quietly cleans the air your baby breathes and helps remove unpleasant odors from the nursery.The Air Purifier emits negative ions, which are natural air cleaners. They attach themselves to allergens, dust, airborne bacteria, and other impurities and remove them from the air.