1. According to a study, the current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet. 2. Even with a slight breeze of about four kilometers per hour (kph), saliva travels 18 feet in 5 seconds. 3. Shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets. 4. In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person. 5. The study analyzed the fates of nearly 1,008 simulated saliva droplets and solved as many as 3.7 million equations.