[thackney]

, and they suck all the oxygen out of the room.

The same thing is happening with a propane heater for the same reason.

it emits deadly CO2 gas and will kill,

You are likely thinking of CO, carbon monoxide. CO2 is emitted when burning properly but not toxic. CO is usually from improper burning (bad flame tip or the like).

I but I would also choose propane inside my home over kerosene, if only for refueling.

[Paladin2]

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

[Obadiah]

Yeah, what you said.