I lived in a mobile home once when I did not have the money to buy a house. It had a kerosene pot burner. When it quit heating the first thing I would do is check the fuel to see if it was empty. If it was empty I could always get go to a local place an get a 5 gal can filled to get me by for a few days.

To light it I had to let some oil into the pot and drop in a piece of burning paper. Once it had burned a short while, gone out and there was a fog of vaporized fuel in the bottom. When I dropped in the burning paper to relight it, the fuel "blew up" like gasoline vapor and singed my face, removing my eyebrows and eyelashes. I stood there stunned for a few seconds and then I heard the clang of the vent cap landing in the street.

I never made that bad choice again and if someone had warned be thay my face was in danger, I would not have made the bad choice to begin with.