An excellent article by Carl V. Phillips that explains (in plain English, mostly) the difference between vapor and aerosol, as well as solid particles vs. liquid droplets. It's worth a good read (or two) to gain a good understanding of the subject matter, and as a tool to educate others on how vapor products work.
Science Lesson: what are vapor, aerosol, particles, liquids, and such? | Anti-THR Lies and related topics
Science Lesson: what are vapor, aerosol, particles, liquids, and such? | Anti-THR Lies and related topics