Was just wondering if you can be allergic to a certain flavor of e-juice. I recently started vaping, and I currently have two fruits/minty flavor and two custard/creamy flavor. I noticed that I can vape the fruit flavors with no issue but as soon as I change to a custard/cream based flavor, I start coughing a looot and gagging. Fruit/Minty flavours are Nasty Fatboy and Unicorn Whyt Berryfreeze. The custard/Cream falvours i have are Vapetasia Killer Custard Strawberry and NastyXKilo Gambino. Nicotine levels and wattage doesnt seem to have any difference in my reaction and also i am using a new coil.