We all know smoking and vaping isn't great for your health. But it doesn't stop you from being a blood or plasma donor. Just make sure to wait one hour after donating Vaping is as bad as smoking and it significantly decreases lifespan. Vaping contains ultrafine particles, volatile organic compounds and aldehydes that promote inflammation and damage heart and lungs. Here are scientific evidence Can you donate blood if you smoke? Can You Donate Blood If You Smoke? What You Should Know Dr. Karuna Kumar Can you donate blood if you smoke?