Atmospheric, visual, or sensory elements incorporated into an exhibit or event environment to create an immersive, dramatic, or memorable experience beyond standard display and presentation formats. Special effects in exhibit and event production include fog machines, lighting sequences, scent delivery systems, projection mapping, motion-activated elements, augmented reality, and live performance integration. Special effects require careful coordination with venue operations, show management, and safety personnel to ensure compliance with fire codes, electrical requirements, and audience safety standards.