Can Muslims Smoke Vape Does Vaping Break Your Fast In Islam Better Is Vaping Considered Haram Can you vape during Ramadan? If smoking breaks your fast, explained Is Vaping Haram? Health Effects & Islamic Perspective Islamic Perspective on Smoking and Vaping: What You Need to Know Is Vaping Haram? Health Effects & Islamic Perspective Does Vaping Break Your Fast?, Sayyid Kashmiri explains that, according to Sayyid Sistani, both vaping and smoking invalidate the fast as a matter of obligatory precaution.