How about providing some documentation of these risks? If even the epoxy manufacturers don't emphasize these dangers, aside from direct skin contact, then where are these fears coming from?

: As a professional builder, I can balance MY risk with the precautions I take.

: As a professional builder, I expose NO ONE else to the risk (with no
: precautions) - not my family, not my neighbors. That is why my advice is
: to build outside where the risk to others is minimized.