When Covid first appeared in the US, several Asian physician friends had simple advice for me, “Wear a mask.” Having dealt with various coronaviruses for over a decade, this was the fundamental lesson taken from dealing with and controlling these respiratory viruses. Now, I may only be a dumb neurosurgeon, (said with humility, irony and in jest), but I know a thing or two about masks, having spent 30 years of life wearing them, sometimes for 12 or more hours at a time. There is nothing pleasurable about wearing a mask, but I have experienced first-hand how masks can protect patients and physicians from illness. More broadly I have seen how masks can protect healthcare workers from the worst of infectious diseases, even giving them supernatural-like protection when they must enter the belly of the beast while caring for highly contagious and fatal illnesses like Ebola. Meanwhile, each and every day, healthcare workers all over the world, including my own family members are able to avoid infection while caring for hospitalized Covid patients who are often spewing the virus everywhere. It’s incontrovertible – masks truly work!; they prevent Covid infections.