Scientists in China believe air conditioning was responsible for the infection of 9 people in Guangzhou who were sitting within the vicinity of each other in a restaurant but never engaged other. According to media reports a man who had come from Wuhan in January was infected but didn't have symptoms of coronavirus. He went to a restaurant together with his family. Families who were sitting in the vicinity in the restraunt were infected despite not interacting with them leaving scientist puzzled. New research however suggests that the air conditioning was responsible for the infection.