Patents described it as "a filter mass of activated charcoal and cotton, with asbestos for structural integrity." However, the asbestos was the star: its fibrous structure created a dense matrix, capturing particles down to 0.3 microns finer than competitors
Bombarely A, Rosli H, Verbalov J, Moffett P, Mueller LA, Martin GB
Why is chewing tobacco considered haram by some scholars
As health journalists take on topics such as outdoor smoking bans, discrimination against smokers in employment or adoption, and the ever-evolving regulation of e-cigarettes, they should consider that however well-intentioned the aims of the tobacco control movement are, its willingness to sacrifice the means of good science to the end of restricting behavior calls for skeptical scrutiny
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