Depends on what you want. If you want to hook him and keep his mind on you, then use the 1-word answer.

you reply "just a cold"

which is a bit longer and less snippy, but still minimal.

Me 42, W 39, S8, S6, S2
M 11y, A & ILYBNILWY 11/08
Walking away from a bad situation.

My Sitch

Strength and Compassion
No Resentment