Smoke without fire: What's the truth on e cigarettes? New Scientist I only smoke 2 cigarettes a day am I safe?, This is one of the most common questions people ask when they try to cut down. While reducing the number of cigarettes is a good first step, it does not E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Using E Cigarettes: What Clinicians Must Know Psychopharmacology Institute