For a really effective surface disinfectant spray hydrogen peroxide and then spray vinegar. It creates a mild form of Peracetic acid when combined and that is a common disinfectant in food processing plants. It kills a broad spectrum of nasty bacteria and is especially effective in bathrooms, kitchens, etc... It disinfects about as well as bleach but without the horrid bleach smell (though of course there is a vinegar smell).
But NEVER mix them in the same bottle! Mixing them at home often creates a toxic/corrosive form of peracetic acid which is downright dangerous. Keep them in separate spray bottles (a dark bottle for the peroxide) and spray one, then the other, then wipe off or rinse after a few minutes. Link on this here:
https://brendid.com/green-cleaning-ingredients-you-should-never-mix/
As far as using it on wounds, I sometimes use it once on a fresh wound, but I wouldn't use it more than once on any given injury. Hydrogen peroxide (and rubbing alcohol) destroys cells which delays healing. That is why it usually burns when applied to open flesh. Repeated use can delay or even prevent wounds from healing since it destroys the cells that are trying to close the wound.
Another awesome use for hydrogen peroxide is as a hair lightener. Mix it in a bottle with lemon juice (50/50) then spray on hair before you plan to go outside. It will lighten hair VERY quickly, in 4-5 days with just 30-60 minutes of time in the sun it lightens as much as a standard chemical highlighting kit. Hydrogen peroxide also lightens without sunlight, but for faster results sunshine is good. Very cheap, very easy, and no hassle when the dark roots grow out as just spray a little more on and the roots blend in.
Plus it is also excellent for bloody crime scene cleanup! Bleach destroys DNA but if you don't want your walls lighting up like a disco when the police spray luminol on it, use hydrogen peroxide (or an oxyclean type soap) to make locating blood impossible. Luminol actually reacts to the oxygen in blood which is how it finds it, and it contains hydrogen peroxide. But if the spot were doused with hydrogen peroxide ahead of time Luminol won't work. (For informational purposes only).