Dogs that can instantly sniff out covid-19 from traveller’s skin swab. Helsinki Airport.

www.nytimes.com/2020/09/23/world/europe/finland-dogs-airport-coronavirus.html

And anything dogs can do, honeybees can also do, since they have the same odor detecting acuity of the best bloodhound.
Bee detectors have been used as explosives detectors for years now and are quicker to train, cheaper, less obtrusive, etc.

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JM