What doesn't get affected when hit with fire?

Question

This is a thinker's question that was on t.v. and it's not metal. If you don't get the question, think of it this way: when fire touches your skin, you get burned. When fire touches water, it smokes. But what doesn't get affected?

Answer 1

Fire.

Answer 2

Fire?

Answer 3

The air surrounding the fire?

Answer 4

asbestos

Answer 5

rock?

Answer 6

Metal doesn't burn.

Answer 7

FIRE....

that's why you fight fire with fire

:-)

Answer 8

the ceramic tiles they put on the space shuttle!  

I know this isn't the answer you were looking for...but its better than saying "fire"

Answer 9

Vacuum ! Try going out into space and walking outa your shuttle and lighting a lighter!!