Hello Watch,
sometimes it can take years before the body is finally cleansed, and especially so if anyone practices relatively short fasts.
The sodium (most likely sodium chloride) or common table salt , which is hidden in many foods, comes to the fore and makes its way out of the body via one channel of elimination or another........in this case thru the mucus of your nose.
A welcome sign of elimination to be sure.
If you combine your foods correctly post fast, and eat only according to real hunger (rather than thru habit) this will accelerate detox big-time.