If the air quality is terrible and you simply don’t have an air purifier, an HVAC filter taped to the box admirer is much better than almost nothing. ขนาดเล็กกะทัดรัดสามารถวางไว้ได้หลายที่ หลายมุม Two Coway filters that we bought in February 2021 experienced a slight odor, and filters that arrived new in 2022 https://www.mannature.com