Smell them right there, then go find her

You grab her sweaty knee-high socks, looking around to see if she can somehow see you, just to make sure the coast was clear, then, you push the black socks to your nose and inhale, taking in the smell of her sweaty socks as much as you can before you go after her, shivering a little from how much it turned you on to know what her feet would smell like if they were right in front of you.

You took a couple more smells of her irresistible knee socks before setting them back on the couch, exactly how they were left. Maybe you can get some more later while she sleeps, but for now, you had to find her before she gets suspicious.

You go into her room to see her in her closet, watching her jump a bit before giving you a hug.

"There you are! I thought you forgot about me!" She giggled as she embraced you.

"You know I wouldn't." You chuckle as she leads you to her bed.

"Well, I know you won't miss this..." She laughs softly before putting her sweaty feet up, all worn out from a day of school and playing, and all for you to admire.

"W-What do you mean, Billie?..." You ask, blushing while she wiggled her little toes.

"I know this is what you want, Big Brother, I saw you smelling my socks like the other times you have... So... Take the real thing."