Jon Hamm's 'Mad Men' co-stars turned "yellow and sallow" after attempting to smoke real cigarettes on screen.
The 54-year-old actor - who led the cast of the 1950s advertising drama for its entire run from 2007 to 2015 - went through dozens of fake smokes, made from rose petals and marshmallows, during filming but he fared better than some of his unnamed co-stars who were keen to make their experience more authentic.