Dagobah was shrouded in dense carbon dioxide clouds.
Carbon dioxide represents a gas exhaled from the lungs of humans during the process of breathing. In 19 BBY, while attempting to evade the Batuu police, Padmé Amidala deliberately inhaled and exhaled deeply to eliminate as much carbon dioxide from her system as possible before submerging her escape pod in a river located on the planet Mokivj. The planet Dagobah was immersed in substantial clouds composed of both water vapor and carbon dioxide.
