Could hydrogen peroxide (H2O2) be used as a 'disinfectant' on hospital patients that are in contact with SARS-CoV-2? Hydrogen peroxide kills harmful pathogens and various forms of bacteria by destroying their cell walls, through a process called oxidation. However, since SARS-CoV-2 is acellular; not composed of a defined cellular structure, would hydrogen peroxide still function as an antiseptic in this case? I am aware that there are other forms of cleaning and disinfection products which has being proven to kill SARS-CoV-2, however, I am curious to understand the practical applications of hydrogen peroxide.

Check out the "List N" from the USA CDC and check out the chemicals used for disinfection that have been tested and found effective against SARS-CoV-2.

Hydrogen peroxide (H2O2) can be used as an antiseptic at low concentrations, but would generally not be used in a clinical setting for control of a virus. It would generally be used as a treatment for cleaning of minor wounds, but is no longer considered to be a suitable cleaning agent for this purpose because of irritation of the skin that happens as a result of application. It can not be used internally.

High concentrations (over about 5%) can produce severe burns on skin and other organs by inhalation or ingestion. Proper PPE used correctly is essential when using these products.

You can, however, as the list N suggests, use it very well as a cleaning agent. It is very bleaching, so it is not a good idea to use it on clothes or materials that are darkly coloured without testing them first.