Nassim Taleb claimed on his Twitter account that Japan has made ventilation a matter of policy. Does anybody know about the accuracy of this? This is what makes

Nassim Taleb claimed on his Twitter account that Japan has made ventilation a matter of policy. Does anybody know about the accuracy of this? This is what makes airplanes safe, right? I honestly don't understand why we don't see restaurants here in the U.S. (edit: my reference is New Hampshire) with at least HEPA filters. Ideally they'd crack the window open even in the winter.