That... actually made a surprising degree of sense considering it was an explanation from someone who'd only overheard it all. Brainiac 5 wants to investigate further, particularly in regard to Dani's unique DNA structure, but it's probably not considered polite by anyone to just take samples for the sake of satisfying personal curiosity.

"This ecto energy," he says instead. "Would I be able to take a sample of it to work on? It might be useful, or maybe we could find a way to create more of it."