So far, we have come to one conclusion. The creature's olfactory system is more highly developed than any known on this planet.

7 seconds sound clip from the 20 Million Miles to Earth (1957) movie soundboard.

You can hear this line at 01:01:49.815 in the Blu-ray version of the movie.

Quote context

[...]

- You can get a better look at the wrist connection this way.

- This is Doctor Koroku of the University of Tokyo. He's assisting Doctor Uhl.

- Another attempt to pry secrets from the creature, doctor?

- We hope this electrodynamometer will enable us to complete our examination of aural passages.

- Could you give us any positive statement on your progress so far, doctor?

- So far, we have come to one conclusion. The creature's olfactory system is more highly developed than any known on this planet.

- You'll find Doctor Uhl on the platform. He's the man in charge.

- Sixty-seven CC's. Correct?

- Si, esattamente, sessanta sette.

- They're feeding the creature a compound of sulfur. Now, sulfur serves it as our vitamins do us.

- Grandpa, will you need me anymore?

- No, no. Grazie.

[...]