Many smokers like to associate themselves to the late George Burns, a famous actor who smoked cigars continuously for many years and lived to be nearly a hundred, as evidence that smoking is relatively harmless. These individuals tend to ignore the thousands of people who die every year from lung cancer. They are illustrating

confirmation bias

Explanation:

confirmation bias is the physiological tendency of an individual to look for information, facts and proofs which reinforces his prior belief. In confirmation bias there is selective information collection while ignoring or not paying attention to information which do not corroborate to their beliefs. Confirmation bias is generally seen in emotional driven beliefs and thoughts.

Here also smokers are citing example of famous personality to validate they’re though that smoking is harmless while ignoring other negative facts hence it is illustration of conformation bias.

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