I don't think it's necessarily to do with machines necessarily being bad at this, but that dogs are incredible. A quote from the article: > Dogs are also able

I don't think it's necessarily to do with machines necessarily being bad at this, but that dogs are incredible. A quote from the article: > Dogs are also able to identify Covid-19 from a much smaller molecular sample than PCR tests, Helsinki airport said, needing only 10-100 molecules to detect the presence of the virus compared with the 18m needed by laboratory equipment. Amazing.