Sounds suspect I agree - nicotine doesnt cause cancer (although using if you already have cancer can, according to some new tests, make it worse but on its own its NON carcinogenic), food flavoring is not carcinogenic (if it was the food industry just went bust overnight), and PG has been tested since 1940 and found to be safe; in fact its used in asthma inhalers and nebulizers for people with damaged lungs, as well as in children's medicines and all kinds of everyday things inc toothpaste.