<blockquote>Officially, the special denaturing program ended only once the 18th Amendment was repealed in December 1933. But the chemist's war itself faded away before then. Slowly, government officials quit talking about it. And when Prohibition ended and good grain whiskey reappeared, it was almost as if the craziness of Prohibition—and the poisonous measures taken to enforce it—had never quite happened.</blockquote>
via <a href="http://www.slate.com/articles/health_and_science/medical_examiner/2010/02/the_chemists_war.2.html">The little-told story of how the U.S. government poisoned alcohol during Prohibition.</a>.