How to get URL link on X (Twitter) App
https://twitter.com/TheFandelier/status/1712205631778963803
https://twitter.com/crboxkits/status/1709992092716667171Ofc since most buses are diesel, this will result in more particulate in the bus, not ideal. However, the acute risk of COVID is worse than acute PM2.5 exposure if you have to choose!
https://twitter.com/CRBoxKits/status/1711908884628308348
https://twitter.com/CRBoxKits/status/1557785594914168832Same basic mini CR Box idea but using HEPAs
https://twitter.com/CRBoxKits/status/1543034613135601664
https://twitter.com/CRBoxKits/status/1534362143985790976Stayin Alive, natch
https://twitter.com/CRBoxKits/status/1539810672204079107
https://twitter.com/CRBoxKits/status/1560758161719455744