Rocket Science
The interior air ducts of the lucky 21, blackjack o'hare's cruiser, were extremely close and stifling.
Reawakened
Samantha felt herself being lowered to the ground, and sat gently on an air duct as grey knelt in front of her, looking at her almost worryingly. his hand stroked her head softly, running his fingers through her thick hair.
Home Sweet Farm 2: Mecha Warrior
He was crawling through an air duct looking for the computer room where the company stored there data. each time someone walked by he would stop and wait till they were gone so he wouldn't be discovered.
The Stingray Queen's Plot
The air ducts were sealed, so the hive couldn't spread through them any longer, nor could they just send the former scientists in as cannon fodder anymore.
fear
The air ducts would work but he didn't know where they lead. there was the window.. he could jump out. but that suit couldn't survive the fall. but then there was always.....
Somebody to Love
Somebody to love by von krieger aziyah crawled through the air duct, crying. hir tears wetting hir fur and catching stray bits of dust in the air.
Chapter 10: Death Comes To All
Shirlene kicked the grate cover open and hopped out the air duct, the rabbit landed smoothly on her feet and motioned for don to do the same.
Broadened Perspectives
The ceiling was yielding against his back as his gradual expansion finally broke the air ducting and rafters, sending light fixtures and scraps of thin metal crashing to the ground.
Hotel Emperador - Chapter 3: Hotel Emperador
This revealed an old looking air duct. the wolf got on his knees and picked up the ventilation window to remove it. this revealed a circular and very rusty air duct which was wide enough for both hunters to go through, one at a time.
Chapter 8: Home is Where The C Wing is
Shirlene carefully undid the vent fasteners and quietly hopped out the air duct. taking in her surroundings, she immediately knew where she was. "storage. never thought i'd get back here again."
The Zombie Apoc-Fur-Lypse, Group 4, Scene 5
"the air duct." steve pointed, "zombies can get through there, yea... but they'd have to be awfully small... probably about jeff's size." he glanced to the young husky, "you're a suff-nut, right jeff?"
Weight of the Curse - BBW, Extreme Weight Gain
She reached the end of the air duct. tight screws held a cover on it, but they were no match for her claws. she twisted the screws off, then gently set the cover aside.