[Firo sighs and shrugs. He doesn't really think about how to cope with things, so Hank's question is one he doesn't know how to begin to answer.

Except denial.]

There's nothing to deal with. We already got through the worst of the sickness. ...This stuff is probably gonna wear off soon.

["This stuff" being their shared inability to pick things up without looking like they're two thirds of the Three Stooges.

He's not basing his assumption in any medical knowledge, just blind hope.]