Through the vent

Alice ducked beneath into the open vent mounted along the wall. It seemed like someone else had the same idea as her, as she spotted dusty footprints along the floor.

She looked back, checking it any heavyset infected followed her through.

Luckily, looking by its movement, it didn't seem to have spotted her.

Alice picked up the pace, crawling through the vent.

The sounds of moans and dull thuds echoed through the vent, as the denizens outside continued fucking like rabbits.

It was rather voyeuristic to see students rub their faces and nether regions against each other, playing around with the infectious blue goo as though it was some form of wet lube.

Finally, she reached the end of the vents, crawling out into the school grounds.