MELBOURNE, AUSTRALIA - MAY 15:  Two women smoke cigarettes outside of Flinders Street Station on May 15, 2014 in Melbourne, Australia. Following a successful smoking ban in the Melbourne Laneway and The Causeway, Melbourne City Council is considering a plan to make the Melbourne CBD smoke-free by late 2016. The plan would see pedestrians, city workers and diners on footpaths banned from smoking in most CBD streets with designated smoking shelters being considered.  (Photo by Scott Barbour/Getty Images)