Yes, it is in teh FLCCC protocols, which is why it caught my attention. IIRC, Jane has been doing this, as have I.
“Iodine nasal spray/drops: Use 1 % povidone-iodine commercial product
as per instructions 2–3 x daily. If 1 %-product not available, must first dilute the more widely available 10 %- solution6 and apply 4–5 drops to each nostril every 4 hours. (No more than 5 days in pregnancy.)”
This nasal spray can be bought OTC?