Joe Johnston wears a face mask at work at the Rocky Mountain Metro Airport in Broomfield, Colo., on May 14. (David Zalubowski/AP)

Joseph Allen is assistant professor of exposure assessment science at Harvard T.H. Chan School of Public Health and co-author of the book “Healthy Buildings.”

You don’t get sick on airplanes any more than anywhere else. Really, you don’t.

If you think this is preposterous or even dangerous to suggest during a pandemic, consider this fact: The ventilation system requirements for airplanes meet the levels recommended by the Centers for Disease Control and Prevention for use with covid-19 patients in airborne infection isolation rooms.