If you leave air inside the fuel tank, the lighter can malfunction because the air is keeping the butane from being injected into the tank
In August 2017, the FDA announced their intention to issue another advance notice of proposed rule-making (ANPRM) to seek public comment on the role that flavors in tobacco productsincluding mentholplay in attracting youth, as well as the role they may play in helping some people who smoke switch to potentially less harmful forms of nicotine delivery
Volkow ND, Swanson JM, Evins AE, et al
Other Impacts of Smoking Heart Smoking weakens the heart and increases the risk of heart attacks and heart disease, in addition to the damaging effects on blood circulation throughout the body
I smoke them (hand-rolled), and I don't fool myself into thinking it's "healthier"
Just ensure the coin fits with room to spare so the coin can move around to dislodge the kief and keep it clean for the best results