With minimal health risks compared to tobacco smoking, PNVs face only one real barrier to use: smokers’ willingness to switch. But, even on this front, the devices have had considerable success, with PNV use increasing exponentially in the last few years.
与吸烟相比，PNV的健康风险极小，其使用的真正障碍只有一个：烟民是否愿意改变。但是，即使在这个方面，PNV也取得了显著的成功，在过去几年中，PNV的使用呈现出指数增长之势。