Smoking

Smoking is a recreational drug activity, which involves lighting anything made of tobacco and tar, and then inhaling the fumes. By the mid-20th Century, however, smoking was considered looked down upon, largely because of then-newly discovered health hazards to the activity, particularly in the respiratory system.

Behind the scenes
Smoking is a recurring element in the Metal Gear series, with it being used by the player characters and, in some cases, at least one supporting character. In the games, various characters usually tell off the main character whenever the character in question undergoes smoking, the only known exception being Peace Walker, where most of the characters are themselves smokers.