Posted on October 16th, 2020 by Phill Snel Prof. Jeffrey Siegel | Airborne transmission of coronavirus has made high-end air filtration systems more popular than ‘toilet paper in April’ as HVAC systems sell out October 15, 2020 | CNBC
Posted on August 19th, 2020 by Phill Snel Prof. Jeffrey Siegel | Coronavirus is in the air. Here’s how to get it out. August 19, 2020 | Vox
