This episode of Lab in the Time of Coronavirus explores a new piece of equipment designed to protect doctors during procedures that help patients breathe: a COVID-proof box that shields against the virus, and filters infected air to trap virus particles. Working hand-in-hand with doctors, a team of scientists and engineers developed the device at Columbia’s Zuckerman Institute — and in makeshift workspaces set up in their homes. Together, they hope it will guard healthcare workers against viruses and other infectious agents even after the current crisis has ended.