presence of an maoi in an herb is the exception, rather than the standard. That being said, invest some time into researching whatever herb you plan on dropping the DMT onto; err on the side of caution.
Er, wait, are you asking if it has ever been done before? or did that answer your question?
Saturating an herb with DMT in order to smoke it without adding an MAOI to that herb has been done before and it is effective.
Hydrocarbon is indeed a real person existing in real time. However, Hydrocarbon is actually a proxy for another individual, Nemano, that lives outside the realm of current Terran laws and regulations. All posts made by Hydrocarbon in which "I", "me", and other references to himself are the voice of Nemano speaking digitally through Hydrocarbon. Any illicit, immoral, or otherwise questionable behavior that Hydrocarbon appears to be admitting to are actually the actions of Nemano.
Occasionally, Hydrocarbon has been known to inject his twisted sense of humor into Nemano's words, but anything stated that was particularly witty or insightful was most likely not the result of Hydrocarbon's intellect.