Vaping, Venous Valves, and Vein Disease 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 FAQs Shepeard Blood Can you donate blood if you smoke? Can You Donate Plasma If You Smoke Weed? My Marijuana Cards Most Commonly Googled Questions About Blood Donation Answered by the Experts, Part 2 Stanford Blood Center