Some of the most common viruses, like the flu, travel through the air. Dr Musofa in Surabaya, Indonesia tells us there are two ways viruses can travel through the air. The first is by sneezing, coughing or dropping mucus from our nose. When you are infected with an airborne virus, the virus can travel along with the droplets of fluid you cough, sneeze or drop out. A good sneeze can spread the droplets for more than a meter, so anyone nearby can be easily infected.
The other way for airborne viruses to spread, is when they float in a cluster or fog of really small droplets. Because the droplets are so small, they are able to cover a greater distance and can infect everybody in a room.