Not true, they add a bitterant but if it's in the US they're still required to add acetone and methyl isobutyl ketone as well.

https://www.law.cornell.edu/cfr/text/27/21.49

That formula clearly spells out rubbing alcohol and disinfectants under the authorized uses. It's toxic and unpleasant.

Woah! I think it's different here in canada then.