Diffusion: Extremely High-quality particles measuring below 0.1 micron get bounced around randomly and are slowed by their interactions with atmospheric atoms and molecules. They ultimately drift or get bounced into a filter fiber, whereupon (once more) they adhere inside a course of action identified as diffusion. กลิ่นไม่พึงประสงค์ เช่น ควันบุหรี่ น้ำเน่าริมทาง waiting for link from Social Network Posts