Regarding components not listed on Korean cigarette packs but classified in Group 1 to 2B by the IARC, the following carcinogens were detected: formaldehyde (8.2-14.3 g), acetaldehyde (224.7-327.2 g), catechol (47.0-80.5 g), styrene (0.8-1.8 g), 1,3-butadiene (15.0-26.1 g), isoprene (91.7-158.3 g), acrylonitrile (0-2.4 g), benzopyrene (0.0017-0.0045 g), and 4-aminobiphenyl (0.0011-0.0016 g)
The chemical composition of tobacco changes when the leaves dry out, which in turn smoothens the smoke and makes it suitable and less harsh for smoking
Decongestants: If the cough is due to nasal congestion, decongestants may provide relief
Making Our Own Choices: Demonstration to learn about hidden chemicals in the vapor and discover refusal skills and exit strategies when faced with pressure to experiment with e-cigarettes
Science 278 , 3537 (1997)