“Federal health officials revised coronavirus guidance on Friday to acknowledge that people can get infected by inhaling very fine, aerosolized particles carrying the virus, following warnings from health experts since last year…
Epidemiologists have pushed for worldwide recognition that the virus can be transmitted by inhalation, saying improved ventilation and other airborne-specific mitigation measures could curb outbreaks.”
https://www.washingtonpost.com/nation/2021/05/07/coronavirus-covid-live-updates-us/