[Paladin2]

Please use a CO2 (& combustible vapor and CO) level monitor(s) if combusting indoors. CO₂ levels above 3-4% is not recommended.

[thackney]

Please use a CO2

I don't think you are going to find a C02 detector unless you work in the gorebull warming industry.

Carbon Monoxide, yes. Carbon Dioxide? Probably not at Home Depot, Lowes or other household supply.