Xiaomi Smart Air Purifier 4 Pro Filter

This air purifier uses multiple filters to clean the air, including a high-efficiency filter and activated carbon filter to remove dust, pet dander, pollen, and odors.

• The description claims the primary filter provides 99.97% filtration for particles as small as 0.3 μm.
• The description claims the activated carbon filter can remove odors like pet smells and cigarette smoke.