Hesitantly strip for the doctor

You ask if it's possible to get some privacy while you undress. Dr. Klein half-smiles under her mask.

"No can do. Can't let you out of my sight for a second," she shakes her head, "besides, I would have to see you naked regardless. Now go on now, take your clothes off."

Not seeing another choice you start to strip. Dr. Klein's eyes seem to sparkle with passion as you do so, watching you intently, looking you over like meat to play with. After a few moments you're naked, the air chilly and making your hairs stand on end. You stand hunched over, your arms crossed and your legs tight together.

"Stand normally please," she says, poking you with a thin metal prodder. You comply, standing up as straight as you can. She circles you like a shark, inspecting you from all sides. She lifts your hand up with the prodder, touching your armpit with her warm rubber fingers. Then she does something you didn't expect she'd do; she sniffs your armpit. She tries to hide it, but there's no missing that small shudder she just did.

"Hmmmmm," she hummed in satisfied thought, "you're a good specimen."

She moved herself away and swipes your armpit with a cotton swab, placing it in a clear ziplock bag when she's done. She moves around you, and then squats down in front of your ass, around her face level. You yelp as she suddenly grabs handfuls of your butt, spreading your cheeks apart. You feel her warm nose touch gently against your anus. What kind of examination is this? She breathes in, almost snorting you all up.

"Ahn..." she moans quietly. She breathes you in for a few more seconds before stopping and standing back up. She picks up a clipboard from the desk and writes something.

"You can usually tell apart unchanged infected individuals from the healthy by the different pheromones they produce. It's possible though that you're not in the clear just yet however," Dr. Klein walks up to you again, a little too close for comfort, "there is one more... test I must make." She places a little see-through cup in your hand. "Fill this cup with your semen for me please."

You blink in surprise.

"You don't have to fill the whole cup, just give me what you can. I'm sure with that stiff penis of yours it won't take too long."

You blink again. Your cock is indeed stiff, much to your embarrassment. You tell her you can't do something like that with her watching.

"Oh yes you can. My observing hasn't stopped anyone before. Besides, didn't I say I can't let you out of my sight? I'm afraid you'll have to do this for me." She grabs your shaft before you can react, squeezing it painfully tight and looking you directly in the eye, her face inches from yours. "Willingly or not." She lets go.