how far the virus can spread. the droplets in the air can carry the virus as easily as somebody smoking. if you can smell the smoke of somebody smoking, that s the very same as the transmission. reporter: the risk outdoors is much higher as previously thought, all of this agency student it s head back to class. more than 100 students at an atlanta school that does require a mask are being told to quarantine. after students tested positive. only one of the staff members had been vaccinated. and the student s eighth great class is now back home doing virtual school. one parent is not surprised. we had the coronavirus. i felt real uncomfortable. we see it on the news, i m not sure. it doesn t make sense with everybody not being vaccinated