My honk honk story. Few weeks ago (south korea) got it's annual yellow dust storm. Was told not to open the windows cause the dust will enter the students lungs. Asked, but they are all wearing masks, why can't I open the windows? Answer: the dust is too small and can enter through the mask. I was dumbfounded.
My honk honk story. Few weeks ago (south korea) got it's annual yellow dust storm. Was told not to open the windows cause the dust will enter the students lungs. Asked, but they are all wearing masks, why can't I open the windows? Answer: the dust is too small and can enter through the mask. I was dumbfounded.