"Two dogs already trained to sniff out cancer had a perfect record...detecting COVID-19...100% of the time." But it'd never fly here. Bonnie would say they eat too many Kibbles and Bits, it takes 3 people to feed a dog, people hate dogs and avoid them.... https://www.ctvnews.ca/health/coronavirus/more-evidence-emerges-that-dogs-are-skilled-at-sniffing-out-covid-19-1.5229122
Australia, Belgium and Finland have already started putting virus-sniffing dogs to work... One dog is able to sniff about 400 people per day, Grandjean said. “If you have 1,000 dogs in a country, that means that you can check 400,000 people in a day.” https://www.ctvnews.ca/health/coronavirus/more-evidence-emerges-that-dogs-are-skilled-at-sniffing-out-covid-19-1.5229122
Finnish airport "using detection dogs to sniff out passengers possibly infected... Dogs are providing a cheap, fast and effective alternative method of testing... Testing has shown an accuracy level of nearly 100% even 5 days before actual symptoms appear." https://unric.org/en/finland-first-in-europe-to-use-dogs-to-detect-covid-19/