Re: Smoking hookah indoors?!
All I can say is that both nakhla and dm smell, and the lingering smell is very pungent (don't know if it has anything to do with the actual taste and smell of tobacco in both brands, but that has been my experience).
In fact, while I smoke inside, most of the time I have a window open with a ceiling fan going, recently I've been smoking mizo (can't recall which flavor) and had some friends come over, before they even came close to the door (they were still outside the house), they knew I had the hookah going and knew exactly what flavor it was.
How-To Etch a Hookah Base:
How-To DIY E-Cigarette: