SUPERB thanks guys great support!
Ill do my best to keep you all posted on the results as and when they come in and any other relevant info that i gain along the way to.
Trudy, the spiro tech agreed with my thoughts on the PV and said that in reality there probably arent any immediate dangers from the basic ingredients that i dished and said that she uses PG on a daily basis with her patients for asthma etc.
But, her professional answer was this: (LOL)
"Anything inhaled into the lungs that shouldnt be there is not good in the long term"
Interpret that line as you wish, i know what she meant lol but that has to be her 'professional' opinion since thats her job

and i appreciate, respect and value that comment
Many thanks
Eddy