"To prevent against alcohol abuse in the United States, all preparations classified as Rubbing Alcohols (defined as those containing ethanol) must have poisonous additives to limit human consumption in accordance with the requirements of the US Treasury Department, Bureau of Alcohol, Tobacco, and Firearms, using Formula 23-H (8 parts by volume of acetone, 1.5 parts by volume of methyl isobutyl ketone, and 100 parts by volume of ethyl alcohol). It contains 87.5–91% by volume of absolute ethyl alcohol. The rest consists of water and the denaturants, with or without color additives, and perfume oils. Rubbing alcohol contains in each 100 ml more than 355 mg of sucrose octaacetate or more than 1.40 mg of denatonium benzoate. The preparation may be colored with one or more color additives. A suitable stabilizer may also be added."
HUH?! Go to any store, pick up a bottle labeled "rubbing alcohol" and read the label. It will be 70-90% ISOPROPANOL. No poisonous additive needed because isopropanol is quite poisonous in it's own right. What you, (or rather Wikipedia) is talking about is denatured alcohol which is sold at the hardware store as a fuel/solvent and is not intended for contact with humans. It's clearly labeled Denatured Alcohol and I'm not sure most reasonable people would confuse the two.