Is there anything dogs can't do? I mean really, they keep on earning their title of Man's Best Friend. From being an excellent companion, an in-home vacuum system for fallen foods, to functioning as feet warmers, dogs improve our lives in so many ways. And now, the latest news from researchers in Thailand have us even more grateful for our furry best friends -- turns out, they can sniff out COVID-19. Imagine a COVID-19 test so non-invasive, a swab anywhere near your body isn't required. That's the claim from a team of scientists who say dogs can detect a particular odor given off by humans infected with COVID-19.