Is Vaping Safe? It Can Cause Higher Risk of Heart Attack, According to a New Study. Cone Health Can You Donate Plasma If You Smoke Weed? https: www.greenreliefhealth.com Smoking (or vaping) doesn't affect your ability to donate blood. Help us bust this myth by sharing our post. 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