Something you have to strongly consider is that you are using machines that have components such as lead from the chips and BPA from the plastic.
Running an exhaust directly over elderberry which is commonly used in medical applications. Is going to directly contaminant your food with these deadly and cancer causing materials. As they are heated up, especially to higher temps, this will become insanely dangerous to consume from chemical vapors leaching out. Then blown and continuously circulated through food.
For the love of god don't eat any of this! You may die or become very sick. If you don't believe me get your food tested from a lab for contaminants. Please, I'm being genuine and very serious here trying to save your life.