Scientists, however, want to know what may be carried along with the water vapor—especially when vaping liquids are superheated, possibly emitting formaldehyde and other toxic components.

但科学家更想知道的是伴随着水蒸气释放出来的其他气体还有什么，比如液体过度加热时可能会产生的甲醛等有毒气体。