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BANGKOK (March 17): Trained by Chulalongkorn University s Faculty of Veterinary Science, six Labrador Retrievers are set to sniff out Covid-19 asymptomatic persons at designated airports and ports in Thailand, with an about 95% accuracy rate. According to Prof Dr Kaywalee Chatdarong, the faculty s vice dean of the research and innovations section, on the Chula Journal website, the faculty decided to train Labrador Retrievers as they are friendly and have good sense of smell. Dr Kaywalee, who is the project’s chief, said dogs’ sense of smell is 50 times greater than that of humans, and through the sweat produced by humans, they could sniff out those carrying the virus but showing no symptoms. ....