- The truth is, captain, she died of an illness contracted on Crete.
- What illness?
- The plague.

8 seconds sound clip from the A Funny Thing Happened on the Way to the Forum movie soundboard.

You can hear this line at 01:16:08 in the Blu-ray version of the movie.

Quote context

[...]

- The gods are awaiting her. They would be angry if we sent up a smoked virgin.

- I cannot afford to offend the gods.

- Who can?

- I will go my melancholy way.

- Very good, sir. Good-bye, sir.

- Wait! A farewell kiss.

- Of course.

- Not you.

- You mustn't! It could make you very sick.

- The truth is, captain, she died of an illness contracted on Crete.

- What illness?

- The plague.

- The plague! The plague! Run for your lives!

- Silence!

- There is no plague. I have this day returned from Crete, and there is no plague.

- Then what was everyone yelling about?

- I seek the... find me the captain. Don't stand there. Will you... you, find me the captain. I...

[...]