I am unaware that this is a re-post. If so I apologize in advance. I found this while searching for info on the storage of propylene glycol and found it very calming and interesting. It kind of calmed any worry I had about inhaling propylene glycol. I also thought that it was interesting that it requires the ingestion of 100ml or more to have any negative effects. Pretty good info to know on the product we inhale all day every day!
PROPYLENE GLYCOL
PROPYLENE GLYCOL