How do you feel and react to adverts that use fear to stop you partaking in a certain activity e.g. smoking?

Do you stop the action because you are afraid what the advert displays will happen to you? If not what do you do? Ignore the advert? Re bell in some way? Continue to do the activity? How does the advert using fear to change your behaviour make you feel? I am a Marketing student and would love it if anyone could think about this technique Social Marketers use to "scare" us into doing the "right thing" and make comments for me to read. Thank you so much I can't wait to hear your comments and feedback.