legal age to buy cigarettes illinois Effective September 1, 2019 the new purchase cigarettes, e- or tobacco products will change to 21 years of age. It is also a violation to sell, give or cause Legal smoking age - Wikipedia

Some of the costs of removing smoke smell may be recoverable from the tenants security deposit (always consult with an attorney)

So, its good to check the restrictions for your specific country or region

Smokeless tobacco cessation with NRT: A feasibility study

Regul Toxicol Pharmacol 96:127134 Iskandar AR, Titz B, Sewer A, Leroy P, Schneider T, Zanetti F, Mathis C, Elamin A, Frentzel S, Schlage W, Martin F, Peitsch MC, Hoeng J (2017) Systems toxicology meta-analysis of in vitro assessment studies: biological impact of a modified-risk tobacco product aerosol compared with cigarette smoke on human organotypic cultures of the respiratory tract

Custom cigarette boxes are used to pack and label different types of cigarettes