ep. #3.7, "The Spy Who Smoked Me", Nov. 7, '05
"OK, this gorgeous African American actress DOES smoke in this episode, albeit briefly. Her character struggles with returning to her cigarette addiction, so she is shown sneaking cigs away from her ex-husband's gaze. She is shown lighting up from a distance, but with no visible exhale; then again, clearly inhaling/exhaling twice and inhaling another time but the camera cuts away from her face and no exhale is visible. Hard to tell if she's a regular smoker IRL, but ... she definitely has IRL smoking experience."
, Allposters.com