how far does the smell of cigarette smoke travel Secondhand can through closed doors, vents and windows. Smoke can enter parts your home from your neighbors in multi-unit housing, exposing you to dangerous and toxic fumes. There is How Fast and How Far

doi: 10.1093/humrep/10.suppl_1.15

They adeptly navigate these challenges by swiftly altering smuggling routes, modifying their methods of operation, broadening their array of activities, collaborating with other criminal enterprises, and implementing innovative tactics

It was a federal bill called Tobacco 21 (T21), which made it harder to purchase e-cigarettes and related devices if you were under the age of 18

[11] It has been estimated that tobacco smoking will kill about 1 billion people in the 21st century if current smoking patterns continue, half of them before the age of 70

References Baker RR (1999) Smoke chemistry