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Dec 12, 2023

Chris and Jonathan speak to Joey Fox, an engineer and the chair of the Indoor Air Quality Advisory Group for the Ontario Society of Professional Engineers. COVID-19 is not over, as both Jonathan and Chris can testify. How can we better protect ourselves from the coronavirus and other respiratory viruses? By improving our air! Joey Fox explains the difference between HEPA and MERV filters, why “UV in a box” is not a good idea, and how to make sense of the different air cleaners you can buy (and make yourself!). We all care about clean drinking water. It’s time we cared about clean air as well.

(2:12) Aerosols vs. droplets

(4:49) How long can respiratory particles linger in the air?

(6:41) Medical dogma and the COVID-19 pandemic

(17:20) How Joey dodged COVID when his daughter got sick

(19:40) Air quality in schools

(22:11) HEPA vs. MERV filters: what to looks for

(24:45) Don’t say it’s airborne! or the politicization of public health

(27:29) UV light to disinfect the air

(32:09) Is the air in your kid’s school good enough?

(33:52) Which CO2 monitor to buy

(34:20) Improving air quality at home

(37:42) Corsi-Rosenthal boxes and PC fan box air cleaners 


* Theme music: “Fall of the Ocean Queen“ by Joseph Hackl.

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1) Joey Fox’s blog:

2) Clean Air Stars:

3) The Ontario Society of Professional Engineers’ Indoor Air Quality website: