I've grown chems on and off throughout the years, and tried all kinds of methods... used fox farm, advanced nutrients, roots, etc. for bottled nutrients, tried "living organic" soils with natural additives, just add water bagged mixes like those offered by kis organics, even no nutrients at all. I usually grow at min. 3 different strains at once, all using the same method, and the chem 4s almost always have those synthetic chemical traits, much more than any other. Other chems can too, but seem to lean more towards deisel and petrol... and just to be clear, I'm not trying to badmouth chemdog strains... i really like chems, they have a pretty good high, and are one of those magic strains that seems to "up" everything they touch... some of their flavors can just get old.
