It's Amy's medical supplies. They can't get wet!
3 seconds sound clip from the Congo (1995) movie soundboard.
You can hear this line at 00:48:59.491 in the Blu-ray version of the movie.
Quote context
[...]
- It's destroyed. It's completely destroyed.
- When there's a moon like that, every monkey for 200 miles thinks he's Elvis Presley.
- Aach!
- It's Amy's medical supplies. They can't get wet!
- Aah!
- There's something on my... It's like a creature or a growth. There's something on my... Look.
- I'm not going to take it off. It's your leech. You take it off.
- No.
[...]