Can You Donate Plasma If You Smoke Marijuana? 2023 Guide to Cannabis Use & Donating Blood 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 How to Quit Vaping: A Practical Guide Smoking (or vaping) doesn't affect your ability to donate blood. Help us bust this myth by sharing our post. Vaping Causes Immediate Effects on Vascular Function RSNA