Yes that’s what I want to monitor for Carbon Monoxide.
Found another alternative for CO2 from Eurotronic:
https://eurotronic.org/produkte/sensoren/luftguetesensor/
According to webpage it “Returns the following values: VOC value (volatile organic compounds) in ppm, CO2 value (as CO2 equivalent) in ppm, Temperature (°C) and humidity (%), Dew point (°C)”
Looks like this one actually is available in stores and quite reasonably priced, if works.
Has anyone tried with Vera?