- 10 or 15 seconds of such exposure would do it.
- Exactly.

6 seconds sound clip from the The Thing from Another World movie soundboard.

You can hear this line at 00:52:24 in the Blu-ray version of the movie.

Quote context

[...]

- We're liable to become famous. So few people can boast that they've lost a flying saucer and a man from Mars all in the same day.

- Wonder what they'd have done to Columbus if he'd discovered America and then mislaid it? Bunch of butterfingers!

- Gentlemen, I just happened to notice... look at these molds.

- Well, they're wilted.

- A blast of icy air if that rear door was opened.

- Have another look at that lock, will you, Professor?

- Yes, doctor.

- 10 or 15 seconds of such exposure would do it.

- Exactly.

- What would that lead you to... that it may have been in here?

- Without a doubt.

- You were right. The lock's been forced and bent back into position again. The key's gone.

- Someone has entered and gone and locked the door from... the outside.

- See how it glistens in the light? It's a smear of... Plant sap.

- From the wounded arm? You don't suppose...

[...]