Unlike cigarette testing machines, which were calibrated to smoke the putative reduced-risk cigarettes in a standardised way, smokers compensated for the lower delivery of nicotine by taking more and deeper puffs per cigarette, smoking more and occluding the tiny ventilation holes on the filters with their fingers
One of the parameters the researchers used to zero-in on the herbal cigarette brands were the number of reviews on online shopping websites
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Participants, 15 active smokers and 17 active e-cigarette users, were instructed to consume their study product according to a pre-directed puffing protocol