[Yeah, he'll spare Mon-El the details of how a meteor struck his planet and he felt himself basically stop existing.]

Mm, I have a fever, but it seems that everyone who has returned is sharing that symptom.

[So he's fine. Don't mind him. No diseases here. Nope.]

As for how I came back? I don't know. I woke up on the Marsiva suddenly and then was transported here without so much as a hello.