3 ms·
Per this study, the number of sick days.
by jstummbillig 2y ago
Per this study, the number of sick days.
- mdp2021 2y agoNo, you got confused there. The point is "what kind of air purification" should we pursue. Correctly you wrote that it should be probably that of the study - but the submission does not say what it is... Rotating mallets? HEPA? Death rays? Carbon?