system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do people actually smoke in movies, or is it some kind of trick?
gpt
There are harmless blends of herbs that give off the correct look when smoked but actors who smoke in real life typically opt to smoke cigarettes. Helena Bonham Carter said her favorite movie to shoot for was Fight Club because it gave her an excuse to smoke around three packs a day.