For all our mask-skeptical friends, here is research on the effectiveness of various mask types at stopping the spread of aerosol droplets (<5 microns). Source: go to 11:30 in . The original research is published in Physics of Fluids.
Distance a cough will expel aerosols:
No mask 8 feet
Bandana 3.5 feet
Folded Cotton Handkerchief 1 foot 3 inches
Surgical Masks 8 inches
...and to that there’s several studies showing likewise and that’s the point of contention with this whole thing. Agendas and money. There’s too much interfering with the truth and we aren’t getting it.