To be more exact, there is no limitation on how much tobacco you can get on the plane, but there is a limitation on how much tobacco you can go through customs
Murray I D, McCabe J F, Storer R
...which was later revealed in the sequel, where natural born smokers like him would be recognized as responsible parents, where their child has to be educated through the exposure to tobacco upon birth, and be sent to a school to be taught to correctly inhale tobacco from peers known as "friends", and any child resisting or refusing it on any ground would be bullied and ridiculed until they comply, as every child would develop a fully-fledged nicotine dependency, carrying the natural smoker's cycle
Not having enough blood flowing to your legs and feet can make it hard for a sore or an infection to heal
Using this idea, an anti-smoking movement took to the looks-based app to see if people find smoking attractive