If you are not wearing a mask when you need to go out in public to somewhere like a grocery store or pharmacy...this computer simulation may help you change your mind!
Scientists created this to show how a cough or sneeze can travel indoors.
It is set in a grocery store...and it shows how quickly small airborne particles and droplets from a single cough can spread in minutes across TWO aisles!
The problem is these particles don't just fall to the ground...they actually move along air currents in the building!
This is a little scary...
Photo: Getty Images