The First Years Clean Air Odor-Free Diaper Disposal The Clean Air Odor-Free Diaper Disposal is the most advanced diaper disposal system available to parents. Don't settle for just trapping odors...Clean Air is engineered to eliminate them! The innovative fan and carbon filtration system is ultra-quiet, and automatically turns on when a diaper is placed in the unit. And, designed with a busy parent in mind, Clean Air uses standard tall kitchen garbage bags--no costly bag refill systems are needed