Question

1. Then he heard a voice say from the doorway, "What is it? A cold or hay fever?"
Before he could think, Horace said, "Hay fever," and found himself sneezing
again. The voice went on, "You can cure it with a special treatment, you know,
if you find out just what plant gives you the disease. I think you'd better see a
doctor, if you're serious about your work. I heard you from the top of the house
just now. falling falling into indirect form of narration​

Answer 1

A cold

Explanation:

because he sneeze