How Old Can You Vape in the UK? Legal Age Guide! Many young people who vape did not smoke cigarettes before they started vaping. But young people who vape are more likely to start smoking cigarettes than those who never vape. For help Chart: Teenagers Two to Three Times More Likely to Vape Than Smoke Statista Signs Your Child is Vaping, Smoking or Chewing Tobacco SD DOH E Cigarettes: What Parents Need to Know