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Therefore: 61 million cigarettes smoked daily x 12 milligrams of PM 2.5 per cigarette = 732 million milligrams of PM 2.5 emitted by cigarettes daily in Beijing = 732 billion micrograms of PM 2.5 emitted by cigarette smoke daily in Beijing = 45.75 billion micrograms of PM 2.5 emitted hourly by cigarettes in Beijing, presuming even smoking rate over 16 hours and sleeping 8 hours Now does anyone know how many cubic meters of air there are in Beijing

You should also be careful in disposing of the charcoal and the resulting ash

To get real-world evidence that plain packs deter potential smokers, we would ideally want to do a randomised controlled trial

What does it smell like exactly