10 Covid-busting designs: spray drones, fever helmets, anti-virus snoodsCompanies the world over are directing their ingenuity at the fight against the coronavirus. Here are the front-runners, from sanitising robots to a 3D-printed hospital ward#Products·www.theguardian.com·Apr 14, 202010 Covid-busting designs: spray drones, fever helmets, anti-virus snoods