Ventilation won't make office buildings as safe as pre-pandemic times, expert says

As companies mull bringing staff who have been working from home back into the office, mechanical engineer Steve Taylor's consulting firm has been fielding questions about making offices as safe as they were pre-pandemic through upgrades to HVAC systems. That's not possible, he says — but if workers wear masks, existing systems that meet ventilation standards we already have should be enough to bring the risk of infection to acceptable levels.