Flavor enhancers?..... flavor and smell are genetic cursors. In order to enhance flavor you need to produce more eccential oils in the plant and the only way to acheive that is to use only the best nuets and grow enviroment. Soil and soiless(peat, coco..) gardens are said to provide better flavor and smell but actualy that is only true with the use of organics, and this is due to the forgiveness of organic nuets and the benificial microbes they bring with them. So with all that said, it takes a plants whole life cycle to produce great smell and taste. Unfortunatley theres no short cuts here, its all about plant genetics and the manner that the plant grown. Hope I didnt go off to much, I just love grown and helpin out.
P.S. Dont forget theres the drying(5-10days) and cureing(1week-2months), and thats realy were you get the good smells and tastes from.