true allergy to iodine is a medical myth
All those potassium iodide tabs people bought for radiation exposure carry an allergy warning. So this is a good time to point out that a true allergy to iodine is a medical myth.
Many people are labeled as having an iodine allergy if they have a reaction to iodine-containing foods or drugs...seafood, Betadine, etc.
These people are then sometimes denied radiocontrast dyes or other products that contain iodine.