Not to quibble about your words of caution regarding handling acid (ANY ACID), but muriatic acid does not attack the body as you indicated. That would be hydrofluoric acid (HF). Muriatic acid is also known as hydrochloric acid (HCl). Our stomachs produce the stuff to digest food, although typically not as strong as used industrially.
Hydrofluoric acid is nasty stuff. Not a terribly "strong" acid, but very dangerous because it will be taken in through the skin and tissue and it is very toxic.
Here's MSDS info for the two
Again, Glenn, I do not want to dampen your words of caution. Everyone needs to understand what they are handling and take appropriate measures to keep themselves and anyone around them safe.