Zero--While not know about saftey to
vape, this list I did many months ago lists the flavors that should IMO not hurt your atomizers. I tested each one of them and gave my opinion--but taste is so subjective. Here is the list reposted here:
Apple (Medium--Very good)
Bavarian Creme (Strong--and not for me)
Black Walnut (felt lke a squirrel)
Blackberry (Strong--Very good)
Brandy (Got lit of this one)
Bubble Gum (Strong--Very Good)
Butter (went looking for some bread to put it on)
Butter Rum (Strong--Very good)
Champagne (Rang in 09 with it--will not in 2010!!)
Cheesecake (strong--very good)
Chocolate Hazelnut (Strong but not too little on the Choc)
Cinnamon Roll (Medium--Very good)
Coconut (strong --Very Good)
Cotton Candy(Strong--Very good)
Cranberry (Strong--very good)
English Toffee (Strong--Very Good)
Guava (did not bother to try--yuck)
Honey (The bees loved it--not me)
Horehound (Strong--taste like a cough drop)
Key Lime (never cared for it so I took a pass)
Lemonade (Strong--very sweet)
Licorice (if you like it--go for it)
Mango (Good to mix with the Strawberry)
Marshmallow (weak)
Mint Chocolate Chip (disappoints but try anyway)
Pecan (not exactly nuts over this one but Strong)
Pina Colada (strong--very good)
Pineapple (Good to mix with the Pina Colada!!)
Pistachio (passed up on it
Plum (not any time soon for me)
Pomegranate (Take a pass--weak--what is it?)
Praline (needed the cream)
Pralines And Cream (Strong--A Winner)
Sassafras (Medium--Not exactly Root beer as you would Expect)
Strawberry Kiwi (Look out Hawaii--nice)
Teaberry (Storng--very good)
Tropical Punch (Strong--puts you in Summer Mode!!)
Vanilla Butternut (the best you can do for a Vanilla--but not vanilla)
Sun