I think that some of that gas has got to your brain.
I have done many tests and experiments on the fumes in the mines.
Here are a few observations.
- the gas (fumes) in the mines is heavier than air, that is why it is only in the underground mines. So it does not make "bags" float!
- this gas is like methane, but not flammable. If it was flammable, I would have blown up the whole of Korth while mining iron ore with my pickaxe.
- you elves should just keep out of our mines!