My dirty panties

My Owner set me a task to provide him with some dirty panties (one rule he set is I'm not allowed to use toilet paper to dry myself after I've had a pee)
I do like a task and have set about this one with relish :-D
I'm currently into day 3 of wearing the same pair of panties and already they are smelling rather ripe! I wear them all day then hang them on my bedroom radiator to dry overnight.
I’ve been riding my bike with them on too, they get ground right up in between my loose pussy lips and covered in my juices. I also use them to wipe myself up after I've had a little play and have gotten myself all sloppy and wet; don't want to waste my juices and they make my panties all lovely and stiff when they've dried out.
I am getting a bit concerned about my work colleagues being able to smell them though as I can smell my dirty piss soaked panties while sat at my office desk.....