[MobileVet]

How are you testing air quality on the plane?

I am also curious how you connect CO2 levels to pathogen levels. Would a carbon filtration system adjust the CO2 levels at the same rate as pathogens?

[sneak]

co2 levels are an inverse proxy for incoming fresh air fraction. this is of course inversely correlated with pathogen concentration (presuming that fresh incoming air from outside is relatively pathogen-free).

they aren’t directly correlated, it’s just a proxy. ventilation reduces both.

[MobileVet]

Makes sense, thanks for the reply

[jonpurdy]

aranet4 CO2 monitor that I bring with me. 2xAA batteries allow it to go for a year or more, and I can pull the readings via Bluetooth to my phone to look at historical data.

As sneak also replied, it's just a proxy: higher CO2 correlates to higher chance of breathing in pathogens, but doesn't take into consideration filtration.