There is nothing libertarian about mass media convincing a herd of people to reject common sense mitigations for a respiratory pandemic. The FUD on this topic is as top-down as you can get, starting with an authoritarian conman whose most intelligent moment was brainstorming about injecting bleach.

As a libertarian I wholeheartedly reject this fig leaf of "freedom" touted by anti-maskers. Freedom is an ability to choose the right thing, not simply being a contrarian for contrarianism's sake. I think hard drugs should be legal, but I similarly wouldn't support people becoming junkies to spite society.