The vapor produced by e-cigarettes is actually water.

False. E-cigarettes don’t produce water vapor; they create an aerosol (a mist of tiny liquid droplets). The droplets mainly come from propylene glycol (PG) and vegetable glycerin (VG) in the e-liquid, which carry nicotine and flavor chemicals. This aerosol can also contain ultrafine particles and trace metals from the device, and at high temperatures some chemicals can break down into