mainstream smoke

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mainstream smoke

Smoke released by a burning tobacco product and directly inhaled by the smoker.
Synonym: first-hand smoke
See also: smoke

main·stream smoke

(mānstrēm smōk)
Smoke that is inhaled directly into the smoker's lungs.

mainstream smoke,

n a vaporous byproduct of burning tobacco products that is purposely taken into the lungs through the oral cavity.
References in periodicals archive ?
THS exposes people to mixtures of chemical compounds in gas phase and particulate phase similar to those contained in mainstream smoke and SHS, as well as to additional products of surface reactions involving tobacco smoke constituents.
The particles of SHS tend to be smaller, and therefore stay airborne longer than mainstream smoke.
This type of smoke contains more toxins and nicotine than mainstream smoke.
328) Although noting that the "physiochemical nature" of ETS differed from that of mainstream smoke, the Committee pointed out that ETS contained many of the same toxic chemicals as mainstream smoke.
According to the American Lung Association, side-stream smoke contains more tar, nicotine and carbon monoxide than mainstream smoke.
Research shows that more deleterious components are released into the environment with sidestream smoke than with mainstream smoke.
Partly because ETS consists of the same carcinogenic chemicals found in mainstream smoke (inhaled by the smoker), the report concludes that ETS can itself be classified by the EPA as a "Group A" carcinogen along with arsenic, asbestos, benzene and radon.
Mainstream smoke, filtered through the cigarette and inhaled by the smoker, is highly concentrated; the toxins it contains occur in comparatively large particles.
ETS contains many of the toxic agents and carcinogens that are present in mainstream smoke, but in diluted form.
Mainstream smoke contains over 4000 identified substances, approximately 4 dozen of which are carcinogenic.
As expected, the mainstream smoke -- the portion inhaled by the smoker -- collected from low-tar cigarettes induced 20 to 30 percent fewer mutations per mg of pollutants in the test system's growing bacteria than did mainstream smoke from the high-tar brand.
Nonsmokers are also exposed to mainstream smoke after the smoker exhales it.