The legend of a warrior; Chapter 44: Heaven is not necessarily Paradise
It took her a long time to clean her body from all his semen, but she had quite an amazing apnea capability to say the very least... and when she pushed her head back out, she was definitely cleaner. "you know... mriya adores you."
Bovine Indulgence Highlights
She snored, loudly, and suffered from sleep apnea from her restricting and burdensome collar of flesh.
The legend of a warrior; Chapter 96 - Son of Apocalypse
The relief was so intense that it was almost painful, his chest expanding as he breathed again after seemingly staying in an apnea for so long, his eyes closing for a moment as he relived all the pain and fear and torment he had endured.
The legend of a warrior; Chapter 75 - The Gates of Hell
Being a god he did not really need to breathe to stay alive, but he continued to hate being in apnea for long periods of time: he had just never really adapted to the feeling.