I would be very careful with putting Iodine in my ear or nose; it stings on thise delicate membranes!
A great option for ears, infection or fullness like swimmers ear or similar is H2O2, 3 or 6 % 2-3 drops. Let it fizz for 5-10 minutes, laying on the side, then change side, shis also drains the ear.
Not to be done daily, but once or twice a month or so if chronic problems. With kids that have ear infections; one treatment is usually enough if caught early. http://www.youtube.com/watch?v=wleeseTyV3A