Discovered Jan 27, 2022. 09:16 The Plan to Stop Every Respiratory Virus at Once <– “Six complete air changes / hour in every room” Previously: August 24, 2021: More DIY COVID fan plus filter from @DavidElfstrom $CDN55 plus tax! We are all E12Ts now part 8888 or something :-) Bonus link: Michael Kalus’s DIY fan setup Leave a comment on github