United Kingdom, June 2 -- Jon Hamm feels lucky to be alive after smoking so many fake cigarettes on the set of 'Mad Men'.

The 54-year-old actor played chain-smoking advertising executive Don Draper in the hit TV drama between 2007 and 2015 - and Jon admits he feels grateful not to have experienced any negative effects after spending almost a decade puffing away on prop smokes.

During a panel discussion at the ATX TV Festival in Austin, Texas, Jon explained: "When you're in gear and smoking cigarette and looking out the fake window, the fake hanging part of Midtown, it was believable ...

"Obviously it's a tremendous honor, and it's a wonderful thing to have worked on and contribute to something that has lasted this long.

"I'm glad I'm ...