Before you roll your eyes… stay with me. This isn’t about cigarettes.This isn’t about vaping.This is about receptor biology. A published hypothesis in Bioelectronic Medicine  asked a very uncomfortable question: What if post-COVID syndrome is partly a breakdown in acetylcholine-orchestrated neuromodulation… and nicotine can temporarily restore it? Now that’s interesting. The Case An otherwise healthy adult developed classic long-COVID symptoms: • Brain fog• Autonomic instabil