... dust mite allergen, pollen, plant spores, fungi, mold, and tobacco smoke, and they are the most common cause of indoor allergy ... as 0.3microns and larger such as dust, pollen, tobacco smoke, mold spores and animal dander etc.Step2: Activated carbon filterIt ... effectively. Step5: IonizerIt can remove inhalable particles like second-hand smoke, cooking soot, airborne dust etc. Benefits:1. This device ...