Propylene Glycol – Germs Worst Nightmare?

Did you know – in 1942, Dr. Oswald Hope Robertson conducted a study to see how the inhalation of propylene glycol affected mice? Within this study, Dr. Robertson advised,

“The propylene glycol itself was a potent germicide. One part of glycol in 2,000,000 parts of air would – within a few seconds – kill concentrations of air-suspended pneumococci, streptococci, and other bacteria numbering millions to the cubic foot.”

Citing from a TIME magazine article from 1942,

“Dr. Robertson placed groups of mice in a chamber and sprayed its air first with propylene glycol, then with influenza virus. All the mice lived. Then he sprayed the chamber with virus alone. All the mice died.”

As you all probably know by now, propylene glycol (PG) is a primary ingredient used in vape juice. PG is an artificial liquid whose job is to absorb water. Aside from our beloved E Juice, PG is used in an array of cosmetics, food, and pharmaceuticals. It is clear and has relatively zero taste/odor.

What does this mean for us, as vapers, today?  What we can theorize right now is that instead of being a threat to our health, the PG in the juice we vape might just keep us healthy. Further studies should be done on the effects of inhaling vaporized PG in order to determine if it can be used successfully as a virus prevention (or extermination) tool.

Our question is, where are clinical trials to further this potentially life saving liquid now? If you, our readers, have heard of any happening since e cigarettes have hit the scene – let us know in the comments below!  We would love to know more… (I’m sure other vapers would as well).

Andrew Figgs

Photography Major from Western Washington University . I joined MBV back in December 2014 and am happy to be working in an industry focused on helping others.

  • C Knowles says:

    Interesting! Thank you!

  • Nathan Matthews says:

    I used to get sick every year seasonally, bronchitis, colds… Ive been vapeing for 2 yrs and I haven’t had the sickness ever since!! Something to be said there I think!!!!!!!!!!!!!!!!

  • Justin says:

    That’s nuts good to know

  • Sakda detsouvanh says:


  • tim says:

    Some clinical trials may be going on in England. You might ask Clive Bates. Many studies that make the light of day are anti vape propaganda and are avidly taken up by “journalists” who don’t seem to be worried about professional integrity?

  • Devonna says:

    Never sick anymore

  • Michelle says:

    good to know. thanks!

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