90% reduction in aerosols in <30 min w/ portable air cleaners (5.5 ACH)
Add in masks and easy to see how you quickly get to >99% from 2 simple steps
it's *almost* like we knew what we were doing when we made this rec in Feb *2020*...
(h/t @polsiewski)https://www.tandfonline.com/doi/full/10.1080/02786826.2021.1877257 …
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