Smoking (or vaping) doesn't affect your ability to donate blood. Help us bust this myth by sharing our post. Can You Donate Blood If You Smoke? What You Should Know Dr. Karuna Kumar E cigarette flavors are toxic to white blood cells, warn scientists Cannabis Use and Blood Donation: Unmasking the Truth Vaping, Even Without Nicotine, Has Negative Effect on Lungs Most Commonly Googled Questions About Blood Donation Answered by the Experts, Part 2 Stanford Blood Center