I don't know... I kind of liked the tile puzzle. [ Luna would take the tile puzzle with a room filling with blood over poison gas any day, really. She casts a look to the door, even if they've managed to avoid the gas with her magic they still need to work out how they're going to get out of this room.

But at least as the moments pass, her breathing seems to be getting better. Even if she's still a little wheezy. She'll be alright. As for wiping the blood from her lips, she's not sure if she should tempt fate when the room's full of poison gas — but she does take the rag with a tiny, grateful smile. ]

... Oh, that's alright. [ What else would she do? Let them die horribly? That wouldn't be very nice. ]

Bubble-Head Charm. I once saw it used in a competition to allow people to breathe underwater. I suppose it would work well enough... at least until we can get out of here.