"Has been talk regarding it as a possible carcinogen also but has not been verified. "

In view of the well proven fact that acetone is a normal metabolic product produced by healthy individuals I find it hard to believe that small, occasional exposures are of the slightest cancer risk.  In some low carbohydrate diet regimens for weight loss the acetone production is high enough to suppress appetite and that is why such diets work so well.  However, the dose does make the poison and excessive acetone exposure would not be healthy.  It has an animal LD50 of several grams per kilogram of body weight and an OSHA eight hour time weighted vapor exposure limit of 500 ppm.  Both of those numbers are huge compared to the exposure anyone would get by using the stuff to kill a bee hive or by painting their nails with finger nail polish.

If you question acetone being a normal metabolic product try a google search and you can find thousands of papers on the subject.
Dick 

HL Mencken said: "The whole aim of practical politics is to keep the populace alarmed — and hence clamorous to be led to safety — by menacing it with an endless series of hobgoblins, all of them imaginary. "

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