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 Can Dentists Tell If You Vape? Smile Stories Think you can't donate blood? Think again. Australian Red Cross Lifeblood Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Vaping: What you need to know Heart and Stroke Foundation FAQs Shepeard Blood