did jon hamm smoke real cigarettes in mad men 9 Facts You Might Not Know About 'Mad Men' Jon Hamm recalls having issues

One intervention in Canada showed that cancer risk warnings led to a decrease in alcohol sales for labeled products and an overall reduction in alcohol sales by 6.31 percent, indicating that proper labeling can reduce alcohol consumption (285)Zhao J, et al

The answer is a resounding yes

But this guy crawled

HSE says they are not confident that vaping is a safe or effective way to stop smoking and recommends other options

Squonk Mods : This specialized mod has a built-in bottle for holding e-liquid, which feeds directly to the atomizer

Now that warning labels were required, a new way had to be found to avoid losing huge numbers of cigarette smokers