People with HIV (PWH) are disproportionately affected by cigarette use, with a 40 - 70% prevalence rate. Although many express a strong interest in quitting, many PWH who smoke experience lower cessation rates with traditional treatments, in part due to their comorbid anxiety and depressive symptoms. Psilocybin, a classic psychedelic referred to as "breakthrough therapy" by the U.S. Food & Drug...