Jordan, I hate to pass on this kind of news but just this morning I saw on Twitter something saying there's no good evidence for nasal sprays preventing Covid. From a PhD in biochem who did a PhD project on Covid. Says the studies are garbage. Here's the link
https://www.reddit.com/r/ZeroCovidCommunity/comments/1iv64oi/there_is_no_convincing_evidence_that_nasal_sprays/?share_id=P6pemmJUJ5ql5SQKpVq-F&utm_content=1&utm_medium=android_app&utm_name=androidcss&utm_source=share&utm_term=1