Viral upper respiratory tract infections (URTI) have a significant impact on individuals, families, health service and economy. There are currently no evidence-based interventions that reduce the duration of symptoms or infectivity. Preliminary evidence suggests that hypertonic saline nasal irrigation and gargling (HSNIG) may reduce symptoms and infectivity. We propose a pilot randomised controlled trial (RCT) comparing HSNIG vs usual care (no-intervention) on 60 healthy adults with URTI to answer the following questions: effectiveness of recruitment strategies and feedback methods; acceptability of nasal irrigation; compliance with procedures; is there a trend towards reduction in symptoms / viral shedding. A qualitative questionnaire will help assess intervention and trial procedures. Information from this pilot will help plan a definitive RCT of this low-cost intervention.