For the record, I'm not just gratuitously showing a character smoking. I wouldn't do that, because art really does affect the way we behave, and I can't know what effect my work will have on someone. Besides helping her hardboiled detective vibe, it's important that Julia engages in self-destructive behaviors like smoking for reasons that will become clearer later on in the story when I can flesh her out a bit more. I'm sorry to get all preachy, but smoking kills people every day, and I feel like I have to say something.