You realise that your hands are dusty and you have a small smear of grease on the side of one from when you opened the door. Since you're already in a bathroom, you figure you might as well wash up. You turn the faucet on the dirty sink, and after a rattling and creaking, a trickle of water starts to gush and spurt out from the wobbling pipes. It looks a little discolored, so you're hesitant at first, but then you put your hands under the lukewarm water and rub them around.
Your skin tingles and feels strange, and after a short while, you pull your hands out and shake off the water. You then gasp in shock, because when you look down at your hands, they are filthy. Smears of grease and oil are rubbed all over the backs, there's black dirt under your fingernails, and the nails themselves are yellowed and ragged at the ends. You look at your palms and see ground-in muck giving you black handprints. You turn and grab the hanging towel at the side, which is stained and a little sticky, then desperately try to rub off the water. But when you stop, your hands are even filthier. The backs of them are covered in dark thick hairs, and they seem larger. Your palms are rough and dusty, and your fingernails are longer and cracked. They're also wet and damp with ripe sweat.
You lift one of your filthy hands to your face and sniff it nervously. A thick, raunchy, warm stink of musk and sweat assaults you, like if you went days without a shower then held your hand between your legs and balls all day. Somehow, you find yourself growing horny at the stink, and your cock bulges in your pants. Something about this room must be cursed. When you try to clean yourself, it instead makes you nasty and dirty.
You realise you should try to leave, and that letting this place make you disgusting would be terrible. But as you grip the rim of the sink, leaving black smears, you find yourself looking at the items in the bathroom. A yellowed, dirty toothbrush. Stained soap. A grungy shower. Creased magazines. A dirty razor covered in hairs.