And I'm a big fan of Perfumer's Apprentice Vanilla Swirl... No diacetyl producers, either, which I think is pretty important.
Some of their flavors DO have them, like the Vanilla Bean Ice Cream, which is a shame because it's sweeter and less floral than the Vanilla Swirl, but I like the floral notes. Many don't. Dunno if Capella's has them or not, but many vanillas do.
(This is the chemical that causes "popcorn lung", google it, as I can't explain it. It's fine to eat, but not to inhale.)