Can Your Dog Smell COVID-19?

Miami International Airport’s COVID screening efforts nosed up a notch with Cobra and One Betta: pups deployed to sniff people’s face coverings to detect the virus in sweat, breath, and scents emitted by metabolic changes in the body.  
 
Long used to sniff out drugs, bombs, and conditions like Parkinson’s, dogs have 50X more smell receptors than humans.
 
A double-blind study found that the pups were 96–99% accurate, rivaling lab tests. They’ve also received rave reviews from their humans:
 
“Everybody, including humans, are wrong at some point. But [Cobra is] almost never wrong,” said Kenneth G. Furton of Florida International University.
 
The biggest challenge is scaling up, given the cost-intensive training required.
 
The Washington Post

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