Mel, have you tried antiviral nasal sprays? I've been using this for the past couple of years, and it's worked great. viraleze.co.uk There's also Nasodine, which is basically a watered-down version of the Betadine throat gargle. Good before and after exposure. nasodine.com take care.
viraleze.co.uk
VIRALEZE™ Nasal Spray | Protect The Moments That Matter
VIRALEZE™ is a barrier nasal spray that contains astodrimer sodium, proven in clinical and laboratory studies to trap and block cold/respiratory viruses. VIRALEZE™ targets the nose, where respiratory ...