The smoke is heavier, thicker, and carries more of those same toxic chemicals, making it much rougher on the lungs if you try to inhale
Its nearly indestructible
This is the spear pattern that built civilisations
Watkins SS, Koob GF, Markou A
That way, if you do have a battery go bad within the manufacturer's warranty, you're able to get it changed out with a lot less aggravation
Any time a person inspires the content of what is inspired easily reaches the lungs, and the fact that cigarettes are designed with pores to make the smoke more aerated only serves to increase the amount of oxygen you take in with your breath, which can help to ward off some of the damage of the smoke (due to oxidative metabolism taking place in the lungs by enzymes that require oxygen)