Back in the 1990s and partly into the early 2000s, this question was a daily routine at the check-in counter: "Smoker or non-smoker?" In some cases, the symbols have stubbornly remained on boarding passes to this day, even though there are practically no smoking flights anywhere anymore. In older advertising campaigns for various airlines and of course in films that were made a long time ago, you can see an image that is, from today's perspective, disturbing: passengers smoking on board commercial aircraft and doing so completely legally. At times, it was even considered good form for some airlines to offer passengers free cigarettes. The flight attendants, who were still officially called stewardesses at the time, went through and offered them pieces of chocolate, much like today. A smoking flight was a flight on which smoking was permitted on board. In the past, smoking flights were common and there were specially designated smoking areas on the aircraft where passengers could smoke. However, due to health concerns and safety risks associated with smoking on board, smoking flights have been abolished in most countries. Today, smoking is generally prohibited on flights, regardless of whether it is a domestic or international flight. Smoking seats on an aircraft were specially designated seats where passengers were allowed to smoke when smoking was still permitted on board. The smoking seats were usually located in specific areas of the aircraft, which were separated from the rest of the cabin either by curtains or a partition. That was the theory, because in practice this separation was often not even present.