You are correct.
However a prolong period of high heat will do the job.
That’s how metal was worked in ancient history. They did not have termite.
I recall the burning smoke coming from the collapsed buildings from the “pit” where they fell went on for more than two weeks.
Everyday I hoped it ended.
That also tells me there was great heat, O2 and a fuel supply from various objects to keep the burning going.
Those are the elements of fire. O2, Heat, and a Fuel (something that burns).
Take away just one of those and the fire dies.
Have a great day young lady.
I always have a great day. You do the same.