Why does foul tasting substance are sometimes added to alcohol?

Foul-tasting substances are sometimes added to alcohol to deter non-consumptive use, particularly in products like industrial alcohols or denatured alcohols. These additives make the alcohol unpalatable, discouraging people from drinking it for recreational purposes. This practice also helps manufacturers avoid taxes on consumable Alcoholic Beverages. Additionally, it enhances safety by preventing accidental ingestion.