Scientists at Florida Atlantic University are experimenting with different nonmedical masks to find the most effective face covering to help stop the spread of COVID-19.
They "delivered" a sneeze or cough from a mannequin head wearing varying face coverings and used lasers to detect respiratory droplets.
The results showed that droplets from an uncovered cough were able to travel more than 8 feet.
Droplets from a bandana-covered cough traveled 3 feet.
With a folded cotton handkerchief, droplets traveled 1 foot, 3 inches, and with the cone-style masks, they traveled about 8 inches.
Stitched-quilting fabric masks were the most effective, with droplets traveling 2.5 inches.