At the start of 2020, most of us wouldn’t have owned a facemask. Few had a regular use for them, and the idea of mandatory usage on public transport or seeing most people wearing them on the street was a foreign concept. But now they’re fairly commonplace.

Dan Bowden is CEO and co-founder of Aō Air. Along with his co-founders, Ilya and Jerry, Aō Air have developed the Atmos — their flagship air filtration mask.