There is a difference between aerosol and airborne transmission. Aerosol transmission is the process by which droplets are mixed in the air with the nucleus of the pathogen, forming a droplet nucleus, which is transmitted through the aerosol and causes infection after inhalation into the human body. Airborne transmission refers to the entire process of airborne invasion of pathogens into new, susceptible hosts after the pathogens are discharged from the source of infection, including droplet nuclei transmission. Effective prevention can usually be achieved by wearing masks and avoiding close contact. Aerosol transmission is not the same as airborne transmission, and it is not the case that if you go out and take two breaths of outdoor air you will be infected, but rather that you will be infected by a carrier of the virus at close range. It is common for healthcare workers to produce a large amount of virus-containing aerosols during suctioning or endotracheal intubation of patients. If healthcare workers exposed to aerosols do not take effective protection, they may be infected by the virus. Healthcare workers should strictly wear protective clothing, masks and goggles to effectively protect themselves. Ordinary people will rarely come into contact with aerosols containing viruses at high concentrations, so don’t be too nervous, just wear a good mask when you go out. And especially small aerosol particles are very light in weight, mainly distributed in the high altitude, will drift away with the wind, the possibility of being inhaled into the body to suffer from infection is not very large. In addition, in the form of aerosols suspended in clothing, skin surface of the virus is only a very small percentage of hand contact and enter the human eyes, mouth, nose, the possibility of this amount of virus triggered by the disease is not very high, do not have to be too panicked. Source: Dr. Yurai