Lanny learned yesterday that his family member has lung cancer and that the disease may be hereditary. To deal with the stress of this news, Lanny wants to smoke a cigarette. What is the most important thing for Lanny to remember before he lights up? Just this once is not a problem. Partially smoking a cigarette will not be unsafe. He may increase his risk for cancer. A menthol cigarette is usually healthier than a nonmenthol.