If it says Extract then it is not the kind of flavoring used for eliquid.
You need professional concentrated flavorings by companies like Lorann, Flavourart, Perfumer's Apprentice or Capella's drops, Seedmans Tobacco flavorings, Faeries Finest has some that are acceptable. And then WITHIN those brands, not all flavors are acceptable. Some are in oil - difficult to use (Lorann's Oils are not all oils but a few are, and a few from other companies, typically citrus and nut flavorings as well as some spices). And some have flavoring ingredients that are unsafe to vape like diacetyl. So you just can't blindly use pro flavorings either.
Go to the DIY section of ECF and read the guide and any linked lists which detail which flavors are safe and unsafe in each brand. The Perfumer's Apprentice site also notes for each flavoring, which are for food applications only (not
vaping), which are not water soluble, etc.
And OneStopDIYShop is a good place to start looking for flavorings - none of the ones they carry have diacetyl. Then there are many additional flavors (safe and unsafe) of those brands and others sold elsewhere and many of those places are mentioned in the guide.
DIY e-liquid