Carme is renting a room in an inn.
The inn is not on fire, but some of its neighbors are, and if Carme just sits in her room and uses up her air bubbles there she'll have no affordances to walk out if it gets worse. She needs to get low, out of her second-story deathtrap, and find a neighborhood that is not actively on fire, and, she supposes, give up on the idea of preparing spells tomorrow, because she cannot get a solid night of sleep under these conditions.
She lets herself out of the building without incident. Picks a direction where it looks a little less bright and smoky. Starts walking. Uses up her first air bubble and then when it runs out the smoke seems to seize her by the throat and she leans on a lamppost - presently unoccupied - and tries to expel it.