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You know, dogs don't have as good of noses as their cousins.... the bear. Bears have a much, much more powerful sense of smell than dogs do, so much so that polar bears can smell seals through the ice. I am still flabbergasted that we never domesticated bears. They simply took SARS COV 2 saliva and compared it with normal healthy human saliva. This is an extremely weak conclusion. They did not test a variety of samples to include a common cold or the flu, or any other saliva from a person with respiratory issues. A more accurate headline would be "Trained dogs able to sniff out spit from people with respiratory issues". Because is a very bad study, with no use, and lack of control of the confusion factors.
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