E-cigarette switching for Tobacco Use

The goal of this clinical trial is to learn if adults 50 years and older who currently smoke tobacco and are in treatment for opioid use disorder will switch to using e-cigarettes instead of continued smoking. Participants will not have a plan to quit smoking and will not be actively trying to quit smoking at the start of the trial. The main questions the study aims to answer are: * Are e-cigarettes a feasible and acceptable harm-reduction tool among older adults who currently smoke tobacco and don't have a plan to quit? * Will switching to e-cigarettes and reducing tobacco use be more likely among patients given access to e-cigarettes compared to individuals who are exposed to a standard brief intervention for smoking cessation (control)? * Does the accuracy of nicotine/tobacco knowledge change after participants are exposed to education on the harms of nicotine relative to no education? Participants will complete a baseline session (BL) and follow-up visits at weeks 2, 6, and 8, each lasting 30-90 minutes, for a total of approximately 3-4 hours of participation in the study. Each session will include computerized assessments of tobacco and other substance use, health status, mood, and functioning. Patients will be randomly assigned at baseline (if meeting eligibility criteria) to receive an e-cigarette product (NJOY Ace) or brief advice to quit smoking (in alignment with recommendations by the American Society of Addiction Medicine).