Some products contain powdered sugar hidden in the wrapper, allowing the user to blow into the cigarette and produce a cloud of sugar that imitates smoke, which comes out of the other end
Briefly, research staff used a digital timestamp feature in an open-source video editing software to estimate start and end times for individual puffs based on various physical cues (e.g., inhaling, glowing cigarette tip), prioritizing overall puffing behaviors (e.g., multiple occurrences of tip glowing without removing the cigarette from the mouth [stutter puffs] were treated as a single puff)
[The sale or supply of tobacco products to persons under eighteen years of age is prohibited, as is the sale or supply of any other product that imitates tobacco and encourages smoking
Its remarkably quiet, particularly for a machine of its capability
Cancer Epidemiol Biomarkers Prev
Smoke Box Test - Comparison In this chart, you can see how quickly some of the most efficient air purifiers removed all the smoke from the glass box