Loss of smell despite using Defcort 30 mg, L Montus, and Cortispray may be due to persistent nasal inflammation, sinus blockage, or conditions like Sinusitis or Allergic Rhinitis. Continue steam inhalation and saline nasal rinses, and avoid dust or allergens. If the problem persists, you may need an ENT evaluation for further tests like nasal endoscopy or imaging to find the exact cause.