Face masks allow virus-containing droplets to escape, study findsIn a study with implications for COVID-19 transmission, mild coughing can expel small saliva droplets through and around a face mask and travel as far as 1 meter (3.3 feet), according to a study published yesterday in Physics of Fluids.Researchers from the University of Nicosia in Cyprus simulated airborne droplet transmission for a person with and without a mask using computer models and found that, while masks may reduce airborne droplet transmission and protect the wearer from other people's saliva droplets, they provide incomplete protection against the many droplets that spread around and away from them.Mask certification standards define a surgical mask's effectiveness