what you will find is that smell is fairly irrelevant so long as its nothing like toluene which will strip the proverbial nerves off your brain cells (reason it has been banned in some places, people can get high on it, mostly children and people who are not to bright, but it causes severe damage to your nervous system

xylene is just about the most broad spectrum solvent you can find relatively speaking, you will pick up everything you want plus a great deal of stuff you never intended to., you best bet may to do the full pull with the xylene then do a selective recrystallization with the shellite, but the stuff pulled by the xylene all on its own will be pretty amazing.

but you mentioned it before so i should warn you, you mentioned a residue, evaporate what ever your intending to use in a dish and see if it leaves an oil or anything before you try to use it, if a oil remains you do not want that stuff.

otherwise dont worry about smells too much, this isnt exactly a "smelly" endeavor, and if anyone asks just say your cleaning the house.