I need to eat
I want to enjoy food
I like stuff that isn't always good for me
I need to breathe
I want to enjoy breathing
I like to breathe flavored air
I need to remain hydrated
I want to enjoy hydrating myself
I like coffee, tea, and juice
I need to not kill people
I want to kill people
I like not being in jail
Flavored E-liquid with nicotine covers 50% of my needs, the world should be happy with that sort of result.
It is said that nicotine can elevate your blood pressure by restricting blood vessels, Take away my nicotine and take a look at my blood pressure, it'll go through the roof.
The total number of naturally occurring elements is 98
1, so if we want to get all douche baggy we could equate element content and likely make a claim that e-liquid is very nearly the same as a cigarette, but that would be a really douche bag thing to do.
The beauty of e-liquid is in the fact that you very well could make up a flavored juice with just four ingredients or three or two or one, the most simple version being just one of the two diluting liquids, for 2 both dilting liquids or one liquid plus nicotine, and so on.
Very simple e-liquids have a limited scope of molecules in their flavoring cotton candy for example, so the spectrum of how many molecules are in a flavor may be very few to very many.
It isn't particularly hard to research what molecules are bringing a particular flavor to the e-liquid
http://lmgtfy.com/?q=flavor+molecules
Maurice
1http://chemistry.about.com/od/elementfaqs/f/How-Many-Elements-Can-Be-Found-Naturally.htm