I suggest you look it up yourself, that's not what Kirlian photography identifies. You can get Kirlian images from rocks, and living things and the chemicals they produce do not have auras. A chemical substance is a chemical substance, regardless of origin. If it's the same arrangement of atoms it'll behave exactly the same way in all respects, whether it's a product of natural plant or animal biochemistry or a chemistry lab. In no case will there be an aura that distinguishes a natural from a synthetic origin.Not sure if you are familiar with Kirlian photography but you might look it up. Natural, living substances give off an "aura" of light where as un-natural substances to not. A natural vitamin will display an aura while synthetic ascorbic acid does not.
And Francis2004's naturopath was indeed wrong, in a certain sense. There are chemicals in the environment that nature by itself would never make, like most plastics. They're wholly synthetic, there are no natural processes that use them or break them down, so in that sense they're not natural. They're made from natural ingredients of course, they couldn't be otherwise because those are the only ingredients there are.