hm. Djinn and efreets predate Islam, through. According to this
http://en.wikipedia.org/wiki/Genie#J...re-Islamic_era ancient middle-easterners saw them like the romans saw their genius loci godling-spirits.
Then again, I do not know whether that would apply to the Persians, whom were further east than that, but linking the "smokeless fire" djinn summons with zoroastrian fire-rituals would fit, thematically..