also a good thing would be adding a good portion of random for those effects (limiting)
...this could also be connected with special abilitys:
- Fire fighter (fires on board are estingished faster, saves more equipment and breathing air / co2 level)
- Battery Specialist (Battery-Acid is faster under control, saves more breathing air / co2 level)
...or/and interacting with "Tauchretter und Kalipatronen" -> "german Momsen Lung" using a "potassium superoxide (KO2) filter"
you just use them reducing the CO2 level, but with limited ammount of filters, so we need a counter for it and a trigger, maybe a crew interaction with LI for commanding using them.