Since your symptoms persist despite nasal drops, you might be experiencing rebound congestion from overusing decongestant sprays (common if used for over 5 days). I recommend stopping those drops. Instead, try saline nasal sprays or rinses to safely clear mucus, and steam inhalation to soothe your airways. An over-the-counter nasal steroid spray (like fluticasone) can also help reduce inflammation safely. Please stay well-hydrated. If your symptoms worsen or if you develop a fever or severe facial pain, please consult a doctor to rule out a sinus infection.

For your symptoms, I recommend a dual approach: Moisturise: Use an over-the-counter saline nasal spray or rinse 2 to 3 times daily. This will safely hydrate your dry nasal passages and help thin out sticky mucus. Allergy Management: Take a daily non-drowsy oral antihistamine (such as Cetirizine or Loratadine) to control your dust allergy. Alternatively, a steroid nasal spray (like Fluticasone) can reduce nasal inflammation. Additionally, stay well-hydrated by drinking water, and consider using a cool-mist humidifier in your room. If symptoms persist, please consult a doctor for a personalised plan.