You may have observed white furniture turning yellowish over time due to exposure to cigarette smoke

[27] Alberto Aziani et al., Empty Discarded Pack Data and the Prevalence of Illicit Trade in Cigarettes (BOTEC Analysis, LLC, January 17, 2017), 24, [28] Alberto Aziani et al., Empty Discarded Pack Data and the Prevalence of Illicit Trade in Cigarettes (BOTEC Analysis, LLC, January 17, 2017), 2, [29] Alberto Aziani et al., Empty Discarded Pack Data and the Prevalence of Illicit Trade in Cigarettes (BOTEC Analysis, LLC, January 17, 2017), 24, [30] Alberto Aziani et al., Empty Discarded Pack Data and the Prevalence of Illicit Trade in Cigarettes (BOTEC Analysis, LLC, January 17, 2017), 2, [31] Alberto Aziani et al., Empty Discarded Pack Data and the Prevalence of Illicit Trade in Cigarettes (BOTEC Analysis, LLC, January 17, 2017), Table 10, [32] Wang, Xu et al., Tax Avoidance and Evasion: Cigarette Purchases from Indian Reservations Among US Adult Smokers, 2010-2011, Public Health Reports 132, no

This means: 10 long puffs may equal 20-30 short puffs in nicotine delivery Adjusting puff duration helps control intake without changing nicotine strength Deep lung inhales absorb more nicotine than mouth-held vapor How do different nicotine strengths affect puff equivalence
(2009) Slogans of MacBaren Tobaccos of international distinction