How does anaerobic bacteria survive on skin?

Staphyloccus bacteria, for instance, is supposedly anaerobic - does this mean it cannot survive contact with oxygen, or merely that it cannot grow with oxygen present? (Since being on the skin means constant exposure to O2)

Does the “anaerobic” also apply to oxygen in water (since H2O has oxygen) or O2 in its by-itself state? Always been confused by definition of aerobic vs. anaerobic.

Anaerobic generally means it can grow without oxygen, usually by fermentation of sugars. So Staphylococcus doesn’t need to be without oxygen to survive, but it can survive without oxygen.

Instead of using oxygen for cellular respiration, anaerobic bacteria often use sulfates or nitrates - so that rotten-egg sulfurous smell is associated with their growth.

Staph. are facultative anaerobes. It’s only obligate anaerobes that are poisoned by oxygen. (A third class is aerotolerant anaerobes, that cannot metabolize oxygen but are not harmed by it.)

Aerobic respiration requires oxygen (by definition). Water is one of the products from aerobic respiration, along with carbon dioxide and ATP.