Okay.
so I thought about it
Heres my idea:
Shaped lose one sense (sight, hearing, taste, smell, touch, or speech) and Snapped lose one sense.
A shaped will gain an ability that is almost a combination of those two senses (I.e. Whill can see with silence (Jax's sight +his hearing)
so if a Shaped got taste and smell, they could identify any poison or smth.