Is this more good news for e-cigs?
Found in a study from 1942:
Propylene Glycol dispersed in the air apparently reduces of
some harmful airborne bacteria.
"Concentrations of 1 gm. of propylene glycol vapor in two to four million cc. of air produced immediate and complete sterilization of air into which pneumococci, streptococci, staphylococci, H. influenzae, and other microorganisms as well as influenza virus had been sprayed. With lesser concentrations of propylene glycol, rapid and marked reduction in the number of air-borne bacteria occurred…"
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