Cannabis smell shifts from full skunk to a hint of citrus : NPR If someone smokes outside, do they bring thirdhand smoke indoors with them? Thirdhand Smoke Resource Center Is Vaping Marijuana Safer Than Smoking? Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Myth: Vape & heated tobacco products are safer alternatives to cigarettes. Truth: They are harmful products; they contain nicotine & toxic substances that can have harmful effects & long term consequences on brain