I've personally never used that crap and have no intention of ever doing so. That shit will absolutely kill a vacuum cleaner and it does stink. My next door neighbor, who is a heavy smoker, uses it and I can smell it outside her front door, even when the door is closed. Ironically, what I smell inside my apartment is the damn smoke from her ciggies.
I've picked up a number of vacuum cleaners from beside the dumpster at my apartment over the years I've lived where I am. I've cleaned them up, used them, passed them on to others, donated them to charity and occasionally sold even one. Every one of them, with maybe one or two exceptions, has been absolutely caked with that stuff. Clearing the vacuum powder out and replacing the bag and the belt is usually all any of them need, although the damage is quite evident when compared to a machine that has never been exposed to it.