The dogs don’t detect the virus itself they detect the discrete metabolic secretions that humans produce when infected. Particularly mucous and saliva metaboids those are shed constantly by a human and fall to the surfaces near by or that are touched by a human. Ever wonder how blood hounds track escaped prisoners through the open air woods with pin point accuracy? This is how, the hound group of dogs have noses 100,000 times more sensitive than humans and can follow the scent trail of a human hours after that individual out of 8 billion other humans have passed by. That’s how good dogs noses are. This scientist took that ability and isolated the scent metabolic compounds of COVID infected people then trains the dogs superhuman nose to find specifically those compounds which yes would be all over the surfaces near an infected human or that they touched with bare hands. Your hands are constantly secreting oils, sweat and dropping dead skin cells on everything you touch everywhere all the time. A single skin cells is enough now for forensics to pull DNA from btw.
This method is not unsurprisingly more accurate than PCR since only a truly infected person would be shedding the metabolic secretions there would be no false positives only false negatives of the person is not shedding large amounts of the metabolics. As a society it makes perfect sense to isolate those who are infectious and actively shedding virus symptomatic or not. Society also has the absolute right of quarantine for infectious diseases this method makes finding and isolating those virus vector spreaders quick, effective and accurate. Its win win win for stopping the spread of the bioweapon. There would be no way to tell if a person is unvaccinated that’s just tinfoil hat crap. You have to have an active COVID infection to have the scents on your body the only thing is unvaccinated people are hundreds of times more likely to be infected but the outcome is the same one has to be actively infected for the dogs to smell them and we can all agree from science that actively infected people should be isolated until clear of the infection. As they have zero right to spread an infectious disease to the rest of uninfected society the Supreme Court’s upheld medical quarantine for over 200 years it’s a plenary power of government.
For just COVID?
HIV?
Herpes (can be spread without being symptomatic)?
Ringworm?
Flu?