The liquid inside canned air can cause frostbite when the skin is exposed to a steady stream. This can vary from an intense burning sensation to serious physical injuries such as skin cracking, and damage to muscles, blood vessels and nerves. Asphyxiation and toxicity.
How dangerous is liquid nitrogen? ... The fact is liquid nitrogen is dangerous if not handled properly. It can cause frostbite or cryogenic burns and if used or spilled in a confined space, liquid nitrogen - which is colourless, odourless and tasteless – can kill you
these liquids are sooo bad