I doubt it. I think for most smokers, one cigarette does them for a while. I don't see anyone stopping at half a cigarette, so I'd guess it would only get smokers used to taking more nicotine in at a time.
Like I said. Mainly because if someone lights up, they'll smoke the whole cigarette. Not half. But if they didn't get enough nicotine from one, instead of not smoking again for a couple hours, they may smoke again after just 45 minutes or so. Or even start chain smoking.