With the air pollution drifting over from China into Korea, pollution indexes are reaching near-Beijing levels on some days, and air filter masks are becoming m

With the air pollution drifting over from China into Korea, pollution indexes are reaching near-Beijing levels on some days, and air filter masks are becoming much more popular in Korea, across all gender and age groups. For this purpose, people aren't wearing any fancy masks with designs, but rather just plain white masks (except for children, who get their cartoon character masks). In the wintertime, people also wear cloth masks (often black) more to stay warm than for filtering purposes. And finally, some people wear masks in the office when they are sick so that they don't transmit their cold to others.