Covid-19 puts new focus on air conditioning

(NBC News)  As restaurants and businesses reopen and schools prepare to welcome back students, a Centers for Disease Control study is raising concern over the role air conditioning systems may play in the spread of COVID-19.The CDC study of a restaurant in China showed an association between the transmission of the virus and the airflow from the air conditioning system."It can be aerosolized, so it can travel in much much smaller droplets travel farther and stay in the air longer," explains