If you are a vaper who is closely following the PMTA process and the long-standing campaign against vapes, it may seem that tobacco flavored e-cigarettes sold at a gas station and made by Big Tobacco will soon be your only option. Behind the scenes, manufacturers of e-liquid nicotine have been hard at work creating a product that does not require tobacco leaves. There is some hope that these will provide regulatory relief and allow adult vapers to continue enjoying the e-liquid flavor profiles that most prefer. Tobacco free nicotine (TFN) has been in the works for years, long before synthetic...