i cannot handle a dusty room much less a cigarette. theres grades of medical vapes thanks to the marilization of legajuana, pretty much anything on that scale will probably work on sufficiently pure DMT.
i am still struggling to get something nice, clean and pure that forms a crystal, but i have managed to fractionate out oils which when vaporized in glass using my precision hot air soldering gun, produced results that were incredibly smooth, nothing burned either, the glass ended up totally free of residue after running to dryness.
But otherwise theres still oral dmt with an MAOi. theres lots of MAOis out there which have different half lifes, and entail very different degrees of risk as far as negative reactions to food, medications or your own neurochemistry go. something about them being reversible or not.
Like elftax said too, a common issue with vaping, while softer, is that its hard to consume enough at one time to get a breakthrough, and personally i cant 100% lung capacity a pure drug-free pg-vape without some sort of irritation or triggering, so you probably shouldnt look to vaping as a magic workaround.
Ive been told when combining harmalas and dmt in a vape though you can step up with small puffs and rather than seconds to redose you can take something like 15-20 minutes to step things up a notch. youll want to do some proper research on this, but, one of the weaker natural sorts of MAOi might be what you want. then you can oral dose half the DMT you want as a salt or however its usually done, and top it off to where you want it to be, smoked.