Chlorine IS bad, though not really in any of the ways you describe. As a pure gas, it interacts with the mucous membranes in our various orifices, forming hydrochloric acid. ChlorINE is not chlorIDE, which is the form found in our bodies. We need chloride to survive, full stop.
You do absorb stuff through your skin, that is true. I don't think anyone would claim you couldn't?