- The photo of pop singer Trisita that Brendan James Fraser saw in the film was a photo once published in a magazine by Sarah Keeler, the actor of Trisita.
- Although Sarah Keeler played a singer in the film, she did not sing her own songs. The songwriter of those songs was Kim Wayman.
- In order to shoot the film, director Jieho Lee and the screenwriter spent 6 years in preparation .
- The film was filmed in early 2006, but its production company ThinkFilm has not found a suitable time to release it, so it was postponed to be officially released in 2008.
- Since several Hollywood actors have not asked for high salaries, the pressure on the film's investment budget is not too great.
- French actor Julie Delpe has a cameo as Gina in the film.
- Chinese actress Kelly Hu made a cameo appearance in the film .
The Air I Breathe behind the scenes gags
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[first lines]
Happiness: I always wondered, when a butterfly leaves the safety of its cocoon, does it realize how beautiful it has become? Or does it still just see itself as a caterpillar?
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Pleasure: Is there something the matter?
Happiness: No. You're track record is perfect. And, with your stock market lock, we could... you could... maybe you should invest more.
Pleasure: No. Small amounts. Just keep it simple.
Happiness: It's just... how do you do it?
Pleasure: Sometimes risking everything is the only choice you have.
Happiness: But you don't seem to be taking any sort of chance?
Pleasure: I wasn't talking about me.