Saw this from Japanprobe.com today. Very interesting video showing how the small particles (0.3~ 5 micron) spread when someone sneeze with or without a mask:
Click on pen to 
Is surgical mask useful to prevent flu?
Previous post: 96% filter now available
Next post: How to disentangle the elastic strap?
{ 1 comment… read it below or add one }
Lol….gross.