Everyone is different I guess...I had bought a jug of Ivory Snow detergent and DH and I simply could not STAND the smell of it! It was an unbearable yucky smell on our clothes afterwards to both of us. We could not even bear having the items in our bureau drawers next to other clothes after washing them in it.
We went back to Woolite on the gentle cycle in the machine. I suspect some people use too much, and that can leave some residue even after the rinse cycle. I am careful to use as per instructions and it seems to rinse out well.
So far so good for all our Lycra, Spandex, and merino wool items after 1 1/2 years of this....