Should be fine. Sodium chlorite has a ph in the 2.5-3.9 range [acidic] depending on concentration, 22.4 is not too high] and coca cola is right around 2.5 as well. Rinse it, wash it, and carry on.
You'd be more likely to a get a mild burn from the 4% HCL I think, however even that if washed right off would be so mild you may not notice since it's in very low concentration also.
PS - not a chemist, but both of these solutions may be entirely too weak to burn you at all given any duration of exposure, I simply don't know. Use them mindfully and you won't have issues. I've used for the last year+ daily and others here have for decades, safely.
Disclaimer:These statements have not been evaluated by the Food and Drug Administration. MMS (Master Mineral Solution) has not been FDA approved to diagnose, cure, mitigate, treat, or prevent any disease. Chlorine Dioxide is also called MMS throughout this website. License: Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.