https://www.msn.com/en-us/news/us/dogs-are-being-trained-to-sniff...

https://www.msn.com/en-us/news/us/dogs-are-being-trained-to-sniff-out-coronavirus-cases/ar-BB13ntPj

"Now, eight Labrador retrievers — and their powerful noses — have been enlisted to help. The dogs are the first trainees in a University of Pennsylvania research project to determine whether canines can detect an odor associated with the virus that causes COVID-19"

"It would not be surprising if the dogs prove adept at detecting SARS-CoV-2. In addition to drugs, explosives and contraband food items, dogs are able to sniff out malaria, cancers and even a bacterium ravaging Florida's citrus groves. And research has found that viruses have specific odors, said Cynthia M. Otto, director of the Working Dog Center at Penn's School of Veterinary Medicine."

https://www.stripes.com/news/us/dogs-are-being-trained-to-sniff-out-coronavirus-cases-1.627819