Thanks for updating us! :) It definitely sounds like your body is being 'freed' of something. I can relate to that relaxed feeling....when I've had parasite treatment or when I've tried other things. It's soooo weird as when you've felt ill for so long and the constant anxiety and nervousness and feeling weird and then it just evaporates and you feel completely normal, it's sooo good!!
I had to laugh at now you've noticed Manhattan stinks lol! It's scarey to know how much our senses can be dulled when we're ill. Sometimes I know how colours are so bright and realise how I'd been too numb to notice before.
I believe teeth grinding is to do with parasitic infection so it's probably just the critters being woken up and disturbed!