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"Mainstream Smoke"

By Terry Martin, About.com

Updated: July 15, 2007

About.com Health's Disease and Condition content is reviewed by our Medical Review Board

Definition:
Mainstream smoke is defined as cigarette (tobacco) smoke which is emitted through a person's mouth after inhaling it. It is produced at a high temperature from the burning tip of a cigarette.

The composition of mainstream smoke is affected by how the smoker inhales and exhales, so it varies from person to person. The frequency of puffs, duration and volume all contribute to the makeup of exhaled mainstream smoke.

See Also:
Environmental Tobacco Smoke
Sidestream Smoke
Secondhand Smoke Facts

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