Mark is right. Ethanol and Benzyl (Alcohol) is common... especially with thicker tobacco absolutes (which can be quite thick), binding flavoring/oils (of which rose oil is a common ingredient in e-liquid)and VG based liquid thinning. It also helps a bit with throat hit on ho hum liquids at lower voltages. Besides, most attys only heat (with the liquid on the atty) at around 160-180 degrees.
@ Shannon65 - If there was worry of fire, we'd all been running around with our heads on fire 2-3 years ago when it was a common ingredient in Chinese and other start-up USA liquid companies. LOL
Be safe