There's an in-vitro study that shows efficacy with common nasal spray ingredients (carrageenan & xylitol): https://www.biorxiv.org/content/10.1101/2020.08.19.2

There's an in-vitro study that shows efficacy with common nasal spray ingredients (carrageenan & xylitol): https://www.biorxiv.org/content/10.1101/2020.08.19.225854v1.full.pdf https://www.biorxiv.org/content/10.1101/2020.08.19.225854v1.... Also, the I-MASK+ early outpatient protocol mentions using a nasal & oral rinse: https://covid19criticalcare.com/wp-content/uploads/2020/11/FLCCC-Alliance-I-MASKplus-Protocol-ENGLISH.pdf https://covid19criticalcare.com/wp-content/uploads/2020/11/F...