Source: https://globalnews.ca/news/7855626/experts-more-measures-covid-19-aerosol-transmission/

More than a year into the novel coronavirus pandemic, Canadian experts say changes are needed to address the indoor transmission of COVID-19 aerosols, tiny particles or droplets that can stay in the air.
They say the current infection control protocols in place don’t adequately help to curb the airborne transmission of COVID-19 and that officials need to pivot to target the appropriate areas, like ventilation and proper mask-wearing.