This is a smoking cessation study which is examining varenicline for use in reducing or quitting e-cigarettes. Half of the participants will receive a placebo pill and half will receive varenicline. All participants will be asked to complete weekly assessments and receive compensation for doing so.

This is a smoking cessation treatment study. Patients who have a cancer or a suspected cancer who will undergo surgical removal of their cancer are eligible to participate in this study. A novel smoking cessation treatment will be provided to half of the participants in the study. All study participants will receive standard smoking cessation therapy including counseling and the nicotine patch.

This research is a randomized smoking cessation trial conducted within and specifically personalized for lung cancer screening patients presenting to a lung screening clinic. Novel tobacco treatments for this population are critically needed, given the growing population of lung screening patients. In the proposed study, we will test a gain-framed messaging intervention specifically designed for lung screening patients (vs. unframed messaging), as well as evaluating NRT sampling (vs. no medication).