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Extra hint 2: Every theme contains a four-letter word

According to statistics published in a medical magazine The Lancet, the numbers of active smokers in 2019 increased to 1.14 billion (1,140,000,000) people

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The filter as claimed in claim 1, wherein said activated charcoal effectively reduces p-BSQ of the tobacco smoke, and wherein said filter is incorporated into a filter of a tobacco smoking device such as a cigarette, cigar, pipe or in a separate filter through which tobacco smoke passes before the process of inhaling

This ultra-practical design delivers 180 degrees of visibility for quick identification of the extinguisher