I know if $E/F$ is a finitely generated algebraic extension of fields, then $E/F$ is separable iff the Kahler differential $\Omega_{E/F}=0$.
Question: I wonder if we only assume that $E/F$ is algebraic without finitely generated, and $\Omega_{E/F}=0$, then is $E/F$ separable?
Edit: This question doesn't solve my question, since the answer there uses the assumption that $E/F$ is finitely generated.