When the Nazis banned smoking

What happened when the Nazis banned smoking and what were the effects? On this week's AntiSocial, we looked at proposals to ban smoking in some outdoor spaces. It led to some people on social media bringing up the Nazis, who launched the first and most broadly reaching anti-smoking campaign in history. In this mini-guide, Adam Fleming speaks to Professor George Davey Smith, a clinical epidemiologist at Bristol Medical School, about what happened and why.