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Journal of Colloid and Interface Science 22 , 126132, (1966)

Less obvious is the even greater advantage given by the price floor

House fires and electrical smoke

In The Sleeping Cardinal , Holmes uses tongs to lift a burning coal from the fireplace and uses it to light his pipe: an act borrowed from the short story "The Adventure of the Copper Beeches"

The moment you burn any plant materialwhether it's tobacco, marshmallow leaf, or lavenderyou create tar and carbon monoxide

This variation between studies may be due to the different puff routines used to generate the tobacco smoke (HCI vs ISO), aging of smoke particles over the puff routine (4 vs 8 mins) and dilution ratios in the smoke bags (75 vs 33)