Quote Originally Posted by SummonerCloud
Besides illegal imbecilicalities.
It's going to be hard to find a sensory enhancer you seem to be looking for without going the illegal route (depending on where you live). Drug=A chemical substance, such as a narcotic or hallucinogen, that affects the central nervous system, causing changes in behavior and often addiction (Dictionary.com). That's what you're looking for, and most are illegal.