Hi Rae915,
I can't make any specific recommendations and cannot claim that Nasodine will offer protection against respiratory illness. However, as per our approved Singapore advertising, Nasodine is "the nasal spray that kills germs" and "If people around you are showing symptoms and unmasked, you may be exposed to germs." As per our recent publication, Nasodine has also been shown to be safe to use up to 4 sprays per nostril 4 times daily. So in any situation, if you encounter people with symptoms, it would be commonsense sense to use Nasodine. I certainly do.
Regards
PM
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