Let's hope it is not another illness because if I am catching another one, I don't think I could convince any of you that I'm fine to continue this mission and possibly even my foolish task.

[ He's not fine now, and no one believes him. However, he's not coughing his lungs out. He's just... seeing things, feeling nauseous, and overly paranoid. So certain that he's about to be abandoned because he's lost his mind, and now they know.

Sherlock makes to stand up, and when he opens his eyes again, he keeps them firmly trained on the ground as if he's looking for footsteps. ]

I-I think it has passed. They were all just some trick of shadows. Or trick of light in the case of the sun.

[ He still thinks he's seeing things others do not. ]