Aerosols and droplets generated during speech have been implicated in the person-to-person transmission of viruses,1,2 and there is current interest in understanding the mechanisms responsible for the spread of Covid-19 by these means. The act of speaking generates oral fluid droplets that vary widely in size,1 and these droplets can harbor infectious virus particles. Whereas large droplets fall quickly to the ground, small droplets can dehydrate and linger as “droplet nuclei” in the air, where they behave like an aerosol and thereby expand the spatial extent of emitted infectious particles.2 We report the results of a laser light-scattering experiment in which speech-generated droplets and their trajectories were visualized.https://videos-fms.jwpsrv.com/content/conversions/24tOJIfp/videos/BKVoF1du-27534150.mp4?token=0_5eb0fb82_0xe09d2d0bf661ac394f62ed16feb5205712ea629b
Hi
Please check the following work. It describes the matters in details. I believe it will help you.
https://www.nejm.org/doi/full/10.1056/NEJMc2007800
Regards
Do you think "flashes" something like electric discharges in the air?
Humidity may also play a role in aerosol transmission, as low levels of humidity increase evaporation of droplet nuclei.
Preprint Environmental risk factors of airborne viral transmission: H...