"According to a trailer preview, there looks to be quite a bit of smoking in this film. Kate has at least one nice exhale in medium shot, and there is a good amount of ambient smoking, too."
"Mortimer smokes in 4 scenes and has several light-ups with cheek-collapsing inhales and lots of visible smoke. She is obviously IRL. Mara also smokes a few times but she's not IRL"
, Allposters.com