difference between digestive enzymes and metabolic enzymes

I believe that there is a difference between a metabolic enzyme and a digestive enzyme. Can someone shed some light about this for us. Am I correct in my understanding of the following:

I understand that digestive enzymes work in the gut to breakup macromolecules such as starch, fats, cellulose, or proteins so they can be absorbed into the bloodstream to be used in cell metabolism throughout the body. It is in the cell metabolism that the metabolic enzymes, such as FMO3 work.

It is my understanding that this is why you can take lactaid pill (or any other lactose enzyme) to help you digest dairy products in the digestive tract, and why there isn’t yet an FMO3 pill that you could take orally to solve the tmau Body Odor problem. Who knows, maybe some day they’ll discover one.