That depends on the manifestation. We are not supposed to speak in tounges aloud if no one present has the gift of interpretation. Yet there are those who insist on sharing this gift. It can be quite distracting.
I’ve known many who have prayed for the gift of tounges, and have recieved? I have prayed for the gift of interpretation, because without it, it tends to bring disorder. I have not recieved that gift, but pray that others at least recieve it.
I was at a retreat where it was encouraged to speak in tounges, at one point found myself doing so, but realized my spirit was unrestful and I had serious issues with some of the tenants that the visiting priest was advocating. I found it to be, for me, the power of suggestion.
Since the demonic masquarades as angelic, I say speaker beware.