As we've been discussing in lecture and in recitation, advertisers are masters at using classical conditioning to sell their product or message. Out of the thousands of advertisements, there is one message that one could argue does the best job of selling their message. That message: Anti-smoking. These messages brilliantly associate smoking with something we're afraid of.
Here we can see that this lighter clearly looks like a gun pointed at our heads. That's the conditional stimulus. The unconditional stimulus is the fear of death that is associated with the gun. From there, the unconditional response is the fear of death with smoking. Therefore, the conditional response is that smoking kills. This advertisement does a great job of tying in a very strong emotion, that being the fear of death, with the message they are trying to make.
Here is another example:

Once again, these advertisers do a great job of trying to get their message across. We have the conditional stimulus ("Children of parents who smoke, get to heaven earlier"), the unconditional stimulus (Child with smoke halo over her head), the unconditional response (the fear of killing your child), and the conditional response (the fear of smoking killing your child).
These advertisements could be the most powerful advertisements out there. They capture a very strong emotion and use classical conditioning to try to stop people from smoking. The only question is, is it powerful enough to overpower a nicotine addiction?
Very eye-catching ads you posted. However strong an anti-smoking advertisement is, I don't think that it will be the driving force that leads a smoker to decide to quit. In my opinion, I feel that in order for someone to truly quit, they must be hit with the death or diagnosing of cancer of a loved one. Personally, the death of my grandfather due to lung cancer was what drove my aunt and uncle to quit. Nevertheless, I'm sure many many people have decided to quit due to other events or driving forces.