Ha ha! Smiley fails at understanding how the thread works!
A) You could learn to dash because:
1) It looks cool. 2) It's a challenge to get past (a mental obstacle to overcome, if you will). 3) The momentum and core strength for a dash complements the core strength and momentum used in an underbar. 4) It can get you over obstacles very quickly and efficiently if you understand how it works. 5) Once you can use it quickly and efficiently, you can mock people who don't understand how to use it.
Q) If I eat enough sodium hypochlorite, can I burp chlorine?
and, this is clean off the top of my head, but, i'd guess no. there will be mainly used for controlling the water flow around the body, (salt) and any excess would be used in the CFTR you allow chlorine into the mucus to help it get moved.