In Nairobi there are smoking zones-you can't even smoke in the street!



And the thing is the real cause of lung cancer is well known and nobody addresses the issue of child asthma in Africa.

The tide turned a decade or so after WW2 when the British Medical Research Council stated lung cancer rates doubled between 1945 and 1957. Though no explanation was offered, cancer deaths increased exponentially by a factor of 3 in Nagasaki and Hiroshima.

http://karanjazplace..com/2013/07/the-cigarette-smoking-causes-lung.html

For a full understanding read without preconceptions,which I know is easier said than done.