What you can do and what is sensible to do are often different things.
Dittos on nixing the denatured alcohol.
There are many ways of denaturing alcohol for purposes of changing its tax status; but all of them have in common that the chemicals added make it unfit for human consumption in some form or fashion.
For a list of the formulas dictated by the batfe in the U.S., you can look here:
1999 CFR Title 27, Volume 1
Some of that stuff is Nasty with a capital N and quite frankly poisonous. Especially given that you haven't said what type of denatured alcohol it is (e.g. SD Alcohol #40) I wouldn't
vape it.
As one example from the CFR:
"Formula No. 40.
(a) Formula. To every 100 gallons of alcohol add \1/8\ gallon of
tert-butyl alcohol, and:
One and one-half avoirdupois ounces of either (1) brucine alkaloid,
(2) brucine sulfate, N.F. IX, (3) quassin, or (4) any combination of two
or of three of those denaturants.
"
What is brucine? It occurs in nux vomica along with strychnine. The wikipedia article on brucine noted that: "Nevertheless, a human consuming over 2 mg of pure brucine will almost certainly suffer symptoms resembling strychnine poisoning..."
Meanwhile, the tert butanol, if inhaled, will cause: "Dizziness. Drowsiness. Nausea. Headache. Vomiting."
Inhale at your own risk!