Yes, but Lilith acts quickly

Just as Bryce's orgasm hit, two pair of footsteps rounded the corner to the kitchen. Bryce's groan of rapture quickly drew their attention to the party host with his pants around his ankles and his large cock filling his new friend's mouth. Lilith glanced over to see that it was two of the girls, a somewhat dumpy brunette whose name she couldn't remember and the redhead Olivia. Both were staring at the disguised demons with shock, the demonic pheromones in the room temporarily halting their reactions.

With the last of Bryce's load in her mouth, Lilith struck quickly, zipping over to the two women and grabbing them. She kissed them both forcefully, making sure that some of Bryce's cum spilled into each of their mouths. Thankfully, the combination of the girls' shock, vague arousal from both the pheromones and witnessing the blowjob, and infectious semen entering their systems made them extremely compliant, the virus already able to gain a foothold in their minds, ramping their lust up and ensuring they would follow Lilith's orders. The heavier brunette actually trembled for a moment, a small ripple of pleasure coursing through her as the demon virus sunk its teeth into her.

"You two are going to forget what you just saw," Lilith said forcefully, looking deep into their vacant eyes. They numbly nodded, completely compliant to Lilith through their haze. "Good, now go back out there and rejoin the party. Oh, and you, make sure you give your boyfriend a good long kiss," she said, pointing to Olivia. The two nodded again, turned around, and left, immediately forgetting what they had seen in the kitchen, only leaving them with a slight ache between their legs.

"That was close," Bryce said, jerking his cock until another smaller load spilled out and into a bowl filled with salsa. "Why not just fuck them and get things going right away?" Lilith turned back to the teenage incubus.

"As much as I'd love to, I will not risk letting any of them panic and escape, especially when none of them are infected yet. My master needs bodies for his cause, and your friends will be perfect. Besides, it won't be long now, not with those two infected and this taking care of the rest," Lilith said, stirring the cum into the salsa with her finger until all trace of it disappeared. She licked the remainder off her finger, savoring the taste. "Mmm, tangy. They'll love it. Now let's go, the real fun is about to start."

Lilith and Bryce rejoined the party, bringing out the bags of chips and the cum-infected dip, which was quickly set upon by the young adults. Caroline's eyes in particular got wider when her enhanced senses tasted her brother's jizz in the salsa, her eyes meeting her sibling's before she licked a chunk off her chip. Glancing around, Lilith saw the larger brunette sitting between two guys, squirming slightly as she tried to quell the growing heat between her legs. She also spotted Olivia making out with Peter, ensuring he was infected as well. Lilith sat back and watched everyone in the room eat, unknowingly infecting themselves with a small amount of her virus. All they needed now was a little push. And the opportunity quickly presented itself.

"So how did you two meet?" one guy asked, his question aimed at Bryce and Lilith. Lilith thought his name was Thompson, the very definition of a well built guy with his short cut hair, swollen muscles, and well fitting shirt and pants. The demoness knew who she was going to have to transform first.

"Funny story, we actually met at a bar," Lilith quickly said, concocting a story that should prove...exciting.

"Dude, you got into a bar? Why didn't you tell us?" one of his friends exclaimed, followed by similar cries of protest from around the room.

"Sorry, sorry, it was a crazy night," Bryce said once everyone calmed down. "Everything happened really fast, and before I knew it, I was half drunk and dancing with a hot girl."

"We both got thrown out for, how did they put it, 'indecent behavior'. Which I guess was accurate given how much of my tongue you were trying to swallow," Lilith said, shooting a teasing look at her supposed boyfriend. "Turns out that was perfect. We ended up in some park and fucked like rabbits all night. Oh god, your dick was so good," she groaned, no longer having to rely on her imagination.

"Any man would do their best when they have these to play with," Bryce said, reaching over and squeezing Lilith's tits in her plastered on top, making her nipples stand out.

"You're such a tease," Lilith cooed, keeping an eye on the other people in the room. All of them seemed to be in at least a mild state of arousal, the virus increasing the young adults' already high libido. Girls had their hands placed firmly over their crotches, some pressing down harder than others, and the guys shifted in their seats, trying to find a more comfortable position for their growing erections. Olivia and Peter continued to make out in a corner, their hands becoming bolder as their inhibitions melted away. The dumpy brunette also had her hand on another boy's lap, rubbing at the growing protrusion there. Lilith could tell it wouldn't be more than a minute before they started transforming and the fun really began.

"Hey, want to show your friends exactly what we did that night?" Lilith said, looking over her shoulder at the increasingly aroused crowd.

"I think they'd love a show," Bryce said, letting his demonic muscles swell a little. He ripped Lilith's already straining shirt in half easily, letting her large tits bounce freely. Lilith returned the favor, dropping her hand into his pants to fish out the trouser python inside, inciting a few gasps from the girls watching with rapt attention.

If anyone had been paying attention to the redheads at the back of the room, they might have been able to shake themselves free of the sexual haze surrounding them as Peter's body bulked up, splitting the fibers of his shirt. The boy was entirely focused on humping his girlfriend, who enthusiastically ground her hips against his, her ass pushing out into pillows begging to be grabbed. Unfortunately for everyone, the couple's slow changes went unnoticed, effectively sealing their fates.

Lilith stroked Bryce's exposed length openly, drawing a bead of precum to the tip. She scooped it up and brought it to her mouth, sucking on her finger with rapture. "Fuck yes, that's the stuff. You girls have no idea how good he tastes. Actually, why don't you find out? He's got plenty more where that came from," she said, squeezing another drop out of his engorged glans. She glanced around the room at all the lusty girls. "Come on girls, you've never wondered what this hunk's cum tastes like? Or maybe you're holding out for someone else's cock? You should give a taste, there's no time like the present after all. Besides, it seems the boys have plenty to give." The women around the room glanced to the men surrounding them, more specifically at their straining erections. Their minds warred with themselves, debating whether to take Lilith's advice or not.