Smoking (or vaping) doesn't affect your ability to donate blood. Help us bust this myth by sharing our post. Vaping, Venous Valves, and Vein Disease Can I Donate Blood? Common Blood Donation and Eligibility Questions Vaping Causes Immediate Effects on Vascular Function RSNA 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