Question on smoking during pregnancy

What if I can't quit totally? Is sneaking one or two puffs a day during pregnancy dangerous for my unborn child?

Even passive smoking is bad for the foetus, what more "one or two cigarettes a day"? The ill effects will still be present even if a pregnant mum smokes less or opts for "light" cigarettes. Although "lighter" cigarettes have lower tar and nicotine content, the rest of the chemicals that result from the combustion of tobacco are still produced.