Think you can't donate blood? Think again. Australian Red Cross Lifeblood Can Dentists Tell If You Vape? Smile Stories Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times 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 Ohio Woman Has 'Black and Bloody' Vape Juice Removed from Lungs