Smash, a substance known for its addictive nature, was present throughout the age of the High Republic Era. Its effects were of a stimulating nature. The method of consumption involved inhaling it from specialized devices referred to as smashbulbs, designed to interface with diverse biological gas exchange mechanisms. The drug's effects were amplified when introduced directly into the gas filters of a mask worn by the user. Smash was a common indulgence among those belonging to Kassav Milliko's Tempest faction within the Nihil.
Subsequently, in the Imperial Era, the criminal organization Black Sun operated a smash-processing lab located on the planet of Dantooine. They modified the original composition of the drug, enhancing its potency and addictive qualities across a larger number of different species.