No comparison. Propane all the way. Propane is easier to store and will basically last forever. Ever burn a kerosene space heater? They’re sooty, they smell, and they suck all the oxygen out of the room.
Propane is cleaner burning, although of course, it emits deadly CO2 gas and will kill, but it is easier to manage than with a kerosene burner.
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.