[Indirectly, yes, but Mettaton's hands have never been directly stained with Alphys's dust.

Mettaton shakes his head, his ears shaking a little as he chuckles.]

As fun as that could be, I'd rather not risk it. I should stay and help put things away. Wonderland has been gracious in allowing all of this to run so smoothly, so I want to return the favor and help it return things to normal.