"I was trying to find out what was going on." Bart answered easily, and honestly, peering suspiciously into the hole his impromptu companion had just leaped into.
"Dude, I'm not sure that's such a good idea? 'Cause you know this kind of gas (the flammable kinds?) are denser than air so they're all gonna be down in that hole and you're gonna be stuck in there breathing them in and also there's no like... ventilation-- you could probably suffocate really quickly. That's what used to happen to coal miners, you know? That's why they carried little birds-- um... sparrows? canaries? something like that-- with them and when the bird died they knew it was time to G.T.F.O. Hey are you still alive down there?" Bart prattled on, before growing concerned and hopping down into the hole with Damian.
He coughed once. "Gross. Now I've got lung cancer. Okay, so what's next, boy wonder?" He asked, eager to help-- and far better at following orders than giving them.