Smoke Signals deals with smoking over the last 100 years.
Often the methods used to persuade involve women and their looks or men being manly. There's even one involving a cute kid holding a cigarette.
Now the law has changed so it is illegal to advertise tobacco products, so this post might be redundant, but the beliefs of graphic designers and the general public a century ago were very different to today's. They probably really believed smoking was not harmful to your health and that untoasted tobacco caused coughing fits.
So what ethical dilemmas might crop up in the future that we take for granted now?