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Menthol reduces harshness and may encourage deeper inhalation of smoke

Cigar smoke contains higher concentrations of toxic and carcinogenic compounds than cigarette smoke

Additionally, should a lithium battery spark a fire, it is more easily extinguished in the cabin of the aircraft

International Journal of Environmental Research and Public Health, 16(23), 4630

The lower baseline CO concentration in the study may be related to the lower number of heavy smokers, lower background CO concentration, shorter years of smoking, and the mean of time since the last cigarette, which was much longer than other studies [24,26]