A German businessman has founded an airline dedicated to smokers.Smintair, or Smokers' International Airways, aims to cater for smokers who feel excluded in an age when all major airlines have banned the habit.A Dusseldorf-Tokyo service is due to begin in October and is expected to serve mainly Japanese businessmen.Smintair's founder, Alexander Schoppmann, a 30-a-day man, said: "There are no laws banning smoking on board. The airlines have made these rules themselves because no-smoking planes are cheaper. It means you don't have to change the air filter system so regularly."