Dr. Vin Gupta explains which masks best protect from Covid-19 Say no to neck gaiters and handkerchiefs. MSNBC Medical Contributor Dr. Vin Gupta explains which masks best protect from Covid-19. Nov. 12, 2020 https://www.msnbc.com/11th-hour/watch/vin-gupta-explains-which-masks-best-project-from-covid-19-95831621739 I saw this last night. I think I need to revisit my mask collection. I suggest people take the time to watch the video.