Scientists in the UK have reportedly trained sniffer dogs to detect COVID-19 by the smell of a person's socks. In an early-stage study, scientists collected 3,500 used and unwashed socks or t-shirts as odor samples to see if dogs could sniff out asymptomatic or mild COVID-19 cases, including mutant variants. The dogs were able to correctly detect COVID-19 approx 9 out of 10 times.
Researchers believe that, by using just two trained dogs, they could identify COVID-19 cases in a line of hundreds of airport passengers at a 94.3% success rate.
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