> > But from what I understand, the vapor itself is toxic, but only remains
> as a vapor for a very short period of time.

The acid is the concern, whether vaporized or not.  The cloud of acid is
dangerous to inhale or get into your eyes, and leaves fine crystals of OA
on any surface it touches (and that you may later touch).
Oxalic acid is not as strong as sulfuric or hydrochloric acid, but stronger
than citric or acetic acid.
All of the above acids, if concentrated, can destroy cell membranes, which
is not a good thing for your body.

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