On a warm October day, I hurried to to class, maneuvering around groups of slower-moving students. I checked my phone – fifteen minutes before class started, enough time to pop into the mini mart and buy some iced tea or soda. Approaching the entrance, I smelled the faint scent of fresh cigarette smoke from a passerby. Then my eyes caught the posters featuring cigarette brands on the mini mart door. All of the sudden, pleasurable memories wafted over me. I could feel the cigarette between my fingers and taste the hot smoke. I was experiencing a smoking craving.