The CO2 thing reminds me of a small petro fire we had at one of our locations.

An individual grabbed a CO2 bottle and held it about chest high and set it off.

I don't understand the mechanics of it, but the intense heat rode right up over the cold CO2 and burnt his hair. He wasn't hurt, other than having shorter eyebrows for a cuple weeks. He too threw the bottle.

We were later trained to hold the bottle head high.