"No," and it's not clear which part he's saying that in response to. At least, not until he continues, "No, you shouldn't— I'm not entirely certain how it's spreading. It might not be safe."

That's about as far as he can get with his warning because something feels as if it's beginning to take over. The connection between them sudenly feels tenuous at best, faraway and floaty, as if Kaeya himself is no longer steady. There are hints of a struggle, but they're not ones that last forever, and soon enough, when his voices becomes much clearer, he sounds... oddly at peace.

"How strange. When did I grow wings?"

Casually, not worried at all.