Cleaning Intestines - water with stools
If water is coming in 2nd stools trip that is very good as it is cleaning intestines.
For some people we drink water clean color and excretes smells like (fish washing smell-bad smell). this is arogya lakshanam. This is good to get bad smell at the last excretion because the rest of the dead cells that are remaining has a smell.
Before if constipated the smell mixed with stools so we think it is the stools smell and not the last stools dead cells smell.