@sueinmn @fdixon63 Thank you for your post, but I am not suggesting that anyone inhale any oils or substances. I agree that vaping is a serious problem and it is not at all the same as what I mentioned. What I suggested is a drop of oregano oil in boiling water and that was on the Doctor Oz show in a segment about sinus infections and he said his family did this treatment themselves. This is like putting Vick's ointment in your vaporizer which has eucalyptus oil in it. The grease stays in the vaporizer and you can smell the scent. You inhale the steam which is water that helps thin mucous.

Boiling water will leave all it's impurities behind and water has a phase shift from a liquid to gas (steam) that occurs at 212 degrees Fahrenheit or 100 degrees Centigrade or Celcius. That is how they make distilled water. Common oils on the other hand have a much higher boiling point than water and will not undergo a phase shift to a gas at 212 degrees and will remain liquid oil. You can sniff oregano oil and smell it, and that is essentially what I suggested. You can do that with or without steam. We probably have all seen that oils remain in the pot when liquids are boiled. One consideration could be about allergies from inhalation of anything a person is allergic too.

I have no experience with any e cigarettes or vaping products, but I'm guessing they use high heat to vaporize whatever is in them, and they probably don't work by boiling water. We always have to consider safety of anything we do, and I am careful about what supplements I do take which are on the advice of my medical doctors, and purchased from companies that market these supplements to doctor's offices and pharmacies.

Here is a link that explains the boiling points of oils vs. water.
https://van.physics.illinois.edu/qa/listing.php?id=1428