Visualization of aerosols. They are different from large droplets. Aerosols stay airborne—that’s why they facilitate coronavirus transmission. #COVID19 (this video from CO2 imaging, but similar phenomenon as smoking & virus aerosols)

2) Contrast that with aerosols when masked. Night and day. The Japanese knew it was airborne from the beginning and took measures to ensure aerosol safety early.

3) How is aerosol different from large droplets? This. Also typical air exchange usually means aerosols in air every 20 min to 4 hrs, depending on ventilation. #COVID19

4) big question is how to disperse aerosols quickly enough. Again, Japanese were ahead of the curve. This early spring video explains what is needed to clear a room’s aerosols with fresh air. #COVID19

5) Great quote by @jljcolorado on aerosols. The cigarettes smoking analogy is best — think of how often you don’t even know where the smoke is coming from, and how long it can linger inside a car or room. That’s aerosols. And that’s the problem. #COVID19