Simply speaking while infected can potentially spread COVID-19

(American Institute of Physics) COVID-19 can spread from asymptomatic but infected people through small aerosol droplets in their exhaled breath. Most studies of the flow of exhaled air have focused on coughing or sneezing; however, speaking while near one another is also risky. In Physics of Fluids, scientists used smoke and laser light to study the flow of expelled breath near and around two people conversing in various relative postures commonly found in the service industry.
Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news