It's not the odds, it's the atmosphere.
4 seconds sound clip from Batman (1966) - The Entrancing Dr. Cassandra (S3E25) TV Series.
You can hear this line at 00:21:40 in the Blu-ray version of the movie.
Quote context
[...]
- Well, how can we fight them if we can't see them?
- We may not be able to see them, but I have the feeling they're still here.
- We're outnumbered eight-to-three.
- It's not the odds, it's the atmosphere.
- Wait a minute. They'd be in the same boat if they couldn't see us.
- Something must have gone wrong.
- Alchemy is a highly-specialized chemical science, Dr. Cassandra. Sometimes even experts go wrong.
- And obviously, something went wrong with your last batch of camouflage pills.
[...]