Hazardous chemicals discovered in flavoured e cigarette vapour More than 100 million people around the world now use e cigarettes, including at least 15 million children, according to the World Health Organization (WHO). The organisation has warned that vaping is fuelling E Cigarette Use Among Youth Smoking and Tobacco Use CDC E cigarette smokers in selected countries worldwide 2024 Statista Top 20 countries with the highest smoking rates, according to data from the World Health Organization (WHO) and Wisevoter: Nauru: This small island nation in the Pacific tops the list with Smoke without fire: What's the truth on e cigarettes? New Scientist