Dogs can’t get COVID (luckily!). But, evidence increasingly suggests, they can smell it out. We spoke with Dominique Grandjean, an animal scientist and veterinarian involved with Project Nosias, a globe-spanning research effort to see if dogs might be the ultimate COVID test thank to the insane power of their noses. It looks like, given the success of their efforts, they might well be onto something that could revolutionize COVID testing. No surprise: Dr. Grandjean points out that a dog can detect a teaspoon of sugar dissolved in more than a million gallons of water — and that is the least amazing thing about their olfactory prowess.