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This may be due to the relatively low porosity of the cigar wrapper and binder leaves, and the large size of the interior of the cigar, restricting oxygen access, which is required for combustion

But, they were buried on a shelf about six feet high under several other bundles placed just as sloppy as the rest of the display

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[28] E-liquid is the mixture used in vapor products such as e-cigarettes [29] and usually contain propylene glycol, glycerin, nicotine, flavorings, additives, and differing amounts of contaminants

[] In addition, factors such as humidity, pH levels, fluoride, and ammonia contribute to other harmful effects