Quote:
Originally Posted by arista
Nicky it enters your whole body via your nose
then gives you, 48 hours block on Covid-19 starting.
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To clarify, it enters your nose and throat via the nose (your nasal airways merge with your mouth at the back of the throat), it doesn't "enter your whole body" like, say, a medication taken via pill. The (advertised) protection is physical at the point of contact, not in your bloodstream.
I'm pretty sure the evidence on how effective these nasal sprays are is not entirely conclusive, though. It won't do any harm but also you don't want people walking about thinking they're protected by the spray and failing to social distance etc.