There have been several movies where the bad guy has been killed thanks to being covered in liquid nitrogen resulting in them being frozen to the spot. It was even used in Terminator 2.
However, the problem with this approach is that being hit by a blast of it will not kill you. Actually, it’s just going to make you a bit cold. You see, it won’t do anything to you, and it is used by some in different forms of therapy to help treat a number of ailments, so if it was as deadly as the movies tried to make out, then why would it be used in that way?
Now, we aren’t saying that you should go and start playing around with it, but there’s no doubt that the substance is far milder than you were perhaps initially aware, but then who has some liquid nitrogen lying around in the first place?