In the game Call of Duty 4 Gaz sprays a fence with a can. what is it?

Question

So the title says all. Gaz sprays a fence with some sort of can. whats the can? and what does it do?

Answer 1

its probably some chemical that can melt metal. I know what part you are talkn about.

Answer 2

I haven't seen that part in a while, but I know which part ur talking about.  My guess is it's either some kind of acid that eats through the metal, or maybe its liquid nitrogen or something similar that freezes the metal, making it brittle and easy to break