Corrected entry: The entire story line around the CO2 scrubber canisters is kind of ridiculous. The Event Horizon was massive, with a crew that only inhabited it a relatively short time (since they all died in short order after attempting the jump), meaning most of its CO2 canisters would still be good. It would have had large reserves of good canisters. Plus, the ships are equipped with stasis pods, meaning they wouldn't need CO2 scrubbers for 99% of the trip anyway.
wizard_of_gore
4th Apr 2021
Correction: The ship also travelled to another dimension. There's no way to know what effect that had on the ship's systems, not to mention the fact that whatever entity is inhabiting the ship is manipulating the environment.
wizard_of_gore ★