[ hm. he does put a hand to their head to check for a temperature and rule out the possibility, but it's as he expects - no fever, which means they probably aren't hallucinating due to sickness. it's far more likely that this is just more colony bullshit, seeing as that's how things usually are - along with the fact that he may have just experienced one of frisk's memories. ]

I think I understand.

[ he sighs, but it's not out of exasperation. it's more out of a pensive concern. ]

Still, you may want to rest at home for the remainder of the day. It could be dangerous to walk around if you're still dizzy.