A common example of a potential negative internality is the effect of smoking cigarettes on those who smoke. For the effect of secondhand smoke, see externality. Statistically, 80% of smokers want to quit, and 54% of people who are serious about quitting fail in a week or less.
Smoking cigarettes can have adverse effects on those who consume them. In the context of externalities, secondhand smoke is an example. Additionally, statistics reveal that 80% of smokers desire to quit, while 54% of individuals serious about quitting experience failure within a week or less.