Eucalyptus smithii (Gully Gum) produces a mild, 1,8-cineole-dominant oil in which eucalyptol constitutes approximately 72.2% of the total composition—a lower concentration than E. polybractea but sufficient to confer documented antifungal activity. The oil demonstrated minimum inhibitory concentrations of 62.5->1,000 µg/mL against six dermatophyte species including Trichophyton rubrum and Microsporum canis, with scanning electron microscopy confirming morphological damage to fungal cell structures.^[1]