Who in this day and age still uses Iodine to treat water? I have not seen anyone in at least 15 years carry Iodine. There are much better modern alternatives out there such as Aquatabs, Kataydn Micropur and Pristine CLO2 to name a few. Of these, I have personally used Aquatab to treat untold numbers of bottles of water.
If anyone insists on still using Iodine, consider getting some Nuun electrolyte replacement tablets to mask the Iodine taste. These tablets are usually packaged in a vial of 12 and in different fruit flavors.
I'm fully converted to filters. Too much non-biological junk in the water and no chemcial taste.
I do still have two bottles of polarpure wrapped in allumnium foil and mylar in storage for emergencies. (that stuff eats through regular ziplocs and mylar bags).