Pretty odor?
My wife smokes. Pretty odor is not what I would call it.
The on board fuel supply of a Zippo lighter is not infinite. Based off my wife’s use, pretty limited. Even if it were sealed, with even light use that supply will not last long.
Unless you want to hump that gallon of lighter fluid in your pack/BOB.
Water proof matches, wax based fire starters, cotton balls rolled in vasaline, might be a better bet. At least then you know exactly how much is left vs wondering if every time you open the Zippo, will it light?