A medium-sized bedroom, 10 x 12 x 8 ft high, has a volume of 960 cubic feet, so you would want a filter with a smoke CADR of at least 960 cubic feet / 12 mins = 80 CFM
Increased Heart Attack Risk Stanton Glatz, an e-cigarette expert for the Center for Tobacco Control Research and Education, published a study in 2018 which says that people who vape every day double their chances of having a heart attack
Middle East Fert Soc J Moayeri A, Ahmadi R, Rostamzadeh A, Salehi N, Mohammadi M, Fatehi D (2018) Preventive efficacy evaluation of Urtica dioica on in vitro fertilization and embryo development in exposed mice
Eighteen to 20 million in the last year
Its important to consider that most boxes are designed to pack and protect only 20 cigarettes