This cutting-edge diagnostic tool detects COVID-19 using scent.

One of the main obstacles to reopening international air travel is the lack of an instantaneous coronavirus test, which could be deployed on the ground and prevent infected individuals from spreading the virus on flights.

Such a test could also be invaluable at malls, massive sporting contests, concerts, and other events.

An Israeli startup recently created a solution to that problem: a reliable yet inexpensive COVID-19 scent recognition test.