What actor boosted lollipop sales when he and his character quit smoking?

The actor who boosted lollipop sales when he and his character quit smoking is Robert Downey Jr.

He famously quit smoking while playing the role of Iron Man in the Marvel Cinematic Universe. The character, Tony Stark, also famously quit smoking, and Downey Jr. used lollipops to help him cope with the cravings.

This resulted in a significant increase in lollipop sales, as fans emulated the actor and character.