The Swedish climate group Klimax (climax), known in Sweden for their campaigns against private motorism, aviation and the meat industry, have been putting up stickers with the text “Flying Kills” on advertisements from different aviation companies.

The stickers are meant to resemble the stickers you can find on cigarette packages warning the buyer of the dangers the cigarettes will cause.

With texts such as “Flying Kills” and “Flying will lead to climate chaos” the guerrilla campaign is a smart initiative that surely will make some people stop and think.

Simon Retallack, from the UK Institute for Public Policy Research (IPPR), likes the idea of putting warning labels on adverts for flights, holidays and cars.

We know that smokers notice health warnings on cigarettes, and we have to tackle our addiction to flying in the same way.

But if we are to change people’s behaviour, warnings must be accompanied by offering people alternatives to short-haul flights and by steps to make the cost of flying better reflect its impact on the environment.

Simon Retallack wants higher air fares, including carbon offset charges. And any passenger unwilling to contribute should “be forced to actively opt out”.