I know of more people killed by kerosene heaters than by propane heaters. And this is an area with more propane heat than oil.
Any heater that is 'un-vented' including Kero, propane, butane, alcohol, wood coal or any thing else will put moisture into the air.
It takes just one small spill with kerosene and your living area is smelling bad. Bad. One leak with propane the smell dissipates quickly.
Both fuels will be willing to burn you to a Krispy Kritter.