@ smokindeuce:
Thanks for the headsup smokindeuce - it's good to see forum members looking out for each other
I've stopped vaping Olbas for the time being as the after taste is not too pleasant and it's not easy to rid the atomizer of the flavour once you've finished.
I did check out the ingredients before hand but nothing really struck me as particularly dangerous in the doses I'd be inhaling - apparently the lowest published lethal dose for Wintergreen is 101 mg/kg body weight in adult humans.
I'm not a great menthol fan but get a pang for it now and again - next time rather than vape it neat I'll try one drop of Olbas to 5 of VG - the sweetness of the VG may overcome the unpleasant after taste of the Olbas.