After a slight accident or rather desperation, you inevitably drink a small portion of the infected custard.

Roaming the planet you find yourself at a custard facility and spot a custard sitting neatly on the floor. As you inspect it, you crouch down before you see a figure overshadowing you.

Freezing slightly, you stand up fully and turn to see someone who also appears to be infected as well as they spoke up in a monotone voice. "You're also infected as well? Interesting.."