jkftl:

“Some reports call the fire extinguishing agent “Freon” but the actual agent SHOULD be (super-expensive)”Halon” which suppresses fire while allowing people to breathe (a bit).”

Halon is a “clean” agent, however when it comes in contact with flames or surfaces abov 300C it breaks down into halon acids and free agents, which are highly toxic to humans.

Halon is also an ozone depleting gas, and is being phased out, with other more dangerous fire suppressants being used. These suppressants generate Hydrogen Flouride at dangerous levels.