I'm not a doctor, but there seems to be some medical basis in some pathologies. If you are a doctor or scientist perhaps your input would be greatly appreciated in the following papers:
In vivo evaluation of the antiviral effect of ClO2 in chicken embryos inoculated with avian infectious bronchitis coronavirus https://www.biorxiv.org/content/10.1101/2020.10.13.336768v1
Subchronic toxicity of chlorine dioxide and related compounds in drinking water in the nonhuman primate https://pubmed.ncbi.nlm.nih.gov/7151767/
Mechanistic aspects of ingested chlorine dioxide on thyroid function: impact of oxidants on iodide metabolism https://pubmed.ncbi.nlm.nih.gov/3816729/
Efficacy and Safety Evaluation of a Chlorine Dioxide Solution https://pubmed.ncbi.nlm.nih.gov/28327506/
Also, CDS is not MMS.