PC has nothing to do with it. Do you really want visitors associating your site, even unconsciously, with addiction, the stench of smoke, death, etc.?

Personally, when I see a business use stock photography that has cigarettes, I have that reaction. And I also wonder whether they're trying to appeal to smokers in particular or trying to convey something else about themselves that I don't understand. To me, it's no good.

How prominent is the cigarette? Could you have it edited out? Does the license for the stock photo permit that?