You've been going out with Rarity for about a week. She's beautiful, generous, fun to be around, and she also loves you giving her butt massages, to which the feeling is mutual.

However, you have two fetishes you haven't told her. You like smelly girls, and also when they fart. You're pretty sure a lady like Rarity would never want to do either of them in front of you, as both are really unladylike, and you don't want to weird her out or disgust her. Although, you are sure Rarity farted silently near you a few times, but you pretended not to notice.

But now she hasn't called you in a week. Carousel Boutique has a sign saying they are closed until further notice, although you can still order her dresses online. So you know she's still making dresses, but for some reason she doesn't want to be seen or talk to you.

You're hoping nothing happened between you and her, but you decide to find out. You call her on her cell phone. It rings only twice before you hear that lovely voice.

"Hello?"

"Hi Rarity. Is everything all right?"

"Well... It's relatively fine, darling."

"Did I offend you in any way? If so, I'm really sorry."

"Oh, no, this has nothing to do with you. I simply cannot go out right now."

"Why not?"

"It is rather embarrassing... if you knew, you might think differently of me."

"I promise I won't think any less of you."

"Well... A week ago I lost a bet to Rainbow Dash. If I won, she would have to wear a frou frou dress for two weeks."

"And what do you have to do?"

"I have to avoid washing any part of myself other than my hands, and not change out of the outfit I'm wearing right now, or use deodorant, for two whole weeks. I am allowed to pull my shorts down to use the bathroom though, and to use toilet paper. But I smell rather unpleasant right now. You don't want to be near me."

"If that's all, I really don't mind. I'd still really love to hang out with you."

"That's... not quite all."

"What else?"

"It's really not ladylike."

"You can tell me."

"Well... I also have to put fart powder in all my meals and anything I drink. It might be hard to believe with how lovely, graceful, and ladylike I am, but I do break wind sometimes, and for the past week, it's almost all the time. Even if you can handle my smell, you don't want to go near me when I'm this gassy. Especially for a butt massage, no one would want to go anywhere near my rear end."

You're really excited to hear all this. You decide now is the time to tell Rarity, it might cheer her up. "If anything, both of these only make me like you more!"

"Beg pardon?"

"I never told you because I thought you'd be weirded out by it, but I have a fetish for girls farting and smelling bad. So if you're doing both I'd love being right next to you for as long as possible."

"Ooh! I am so relieved to hear you say that. When would you like to come over?"

"How about 1:00?"

"Sounds good."

So, at 1:00 you go over to Rarity's house. She answers the door, and as you enter, you notice Rarity's smell. She is wearing a light blue tank top and short skintight purple shorts. They look slightly dirty.

"You look wonderful, and I like how you smell, too."

Rarity blushes but smiles. "Why, thank you, darling." She sniffs her armpit and recoils. "Want to get a little closer?"

You get closer and sniff her.

"It is rather unexpectedly fun having you sniff me when I'm like this," she says. "It makes me feel this wasn't so bad a fate after all, and it is almost fun being dirty for a change."

FFFFFFRRRRRRRRT!

Rarity blushes at the loud fart that had come out of her.

"Excuse you, Rarity," you say, but with a smile on your face.

"My apologies," she says instinctively.

"There's nothing to apologize for. Remember, I love it when you fart." You slap her butt.

"If you really don't mind... how about a butt massage?"

"That sounds great."

She gets on all fours, and you rub her butt. It is as soft as always, like a pillow, and you love how it feels on your hands. But now there's extra pleasure as you sniff her butt. Her shorts smell of body odor and farts, and look a little dirty.

"Ahhh, that's perfect," she says. She farts in your face, and blushes with a nervous giggle. You just inhale deeply. This is better than all the other times you've done this.

...

After your kinky day, another week goes by. Although Rarity can now wash and change, she is enjoying this so much she chooses not to. She does reopen Carousel Boutique, wearing a fancy dress over top her dirty, smelly outfit, with an air freshener necklace of her own design so as to hide her foul smell from everyone else. And most of the time she is able to fart silently, or at the very least make a "pssssshhhhhh" sound.

Soon, a month has gone by since Rarity has stopped washing. You knock on Rarity's door.

"Come in!" she says cheerfully.

You open the door and are immediately hit by a powerful stench. You look around and find her sitting on the couch, a visible stench coming off her, and her tank top and shorts looking very dirty.

"How do I smell?" she asks, raising her armpits.

The odor intensifies as the smell of her armpits reaches you. "Phew! You smell worse than sewers and the dump put together!"

She giggles. "Not too much for you, is it?"

"We've already established there is no such thing as too much. But at the same time, you're free to wash whenever you want to."

"I might actually do it tomorrow morning. If that's all right. It's fun being a smelly girl, but I think it's about time I started being ladylike again. Well... I might still fart a lot around you." BBBBBBBRRRRRRRT! A loud, deep-pitched fart makes its way out of her after she says this, and she giggles some more without so much as a blush.

"It's not ladylike to fart like that," you say. "You need a spanking." You sit on the couch, and Rarity immediately climbs over your lap. She loves this roleplay. You slap her butt repeatedly, both of you taking immense pleasure in each swat, and sometimes a swat will make her fart, which gives her an even more dirty pleasure in this.

After over 30 swats, you stop. "That should be good, I don't want your butt to hurt too badly."

Rarity sits on the floor and winces. "My rear end is in a lot of pain. If only there was some way to fix that." She winks.

"I know just the thing," you say. "On all fours."

Rarity does as she's told and you start caressing her behind. As always you take pleasure in the feeling of her tush between your hands. You sniff deeply, picking up an extremely foul smell of body odor and farts. Her shorts feel dirty and grimy and slightly damp in your hands. You let out a sigh of satisfaction, before she lets out a series of short, loud, wet farts. Of course it's even more fun when she's farting in your face!

After about six minutes, you stop. Rarity releases a long, boisterous fart. PPPPPPFFFFFFFFFT!

"Nice one, Rarity," you say, slapping her butt lightly.

"That didn't hurt at all," she says. "I do believe my bottom is all better. Now, it's time to go into the empty closet."

"Sounds good."

You and Rarity go into one of her closets, which is empty. On the way there you walk behind Rarity, so that you always have a whiff of her and get a view of her butt. Once inside, Rarity closes the door, and soon the closet is full of a stench so pungent that it would likely make Rainbow Dash faint.

You stand in this stinky sauna for a minute before Rarity raises her left arm, grabs you with her right arm, and forces your face into her armpit.

The smell is beyond foul, and most people would never expect it to come from one such as her. You get the feeling that Applejack would faint in your position even after years of working with manure. But all you feel from this is excitement rather than disgust.

She holds you in this position for a minute before she releases you. To use the term loosely as you really love being in this position. She sits down and removes her socks, causing more stink waves to emanate from her feet.

You take both her stinky feet in your hand and sniff them as hard as you can. They smell just as bad as her armpits. And you love it.

Rarity giggles, enjoying you smelling her in this state. This has all triggered a dirty side of her she never knew existed, even compared to the butt massages.

FFFRRRRT! BRAP! FLART! PPPRRRRRRRRRT!

The smell in the closet is so overpowering you don't even notice a difference with all her farting.

Once you're done sniffing her feet, you lay on your back.

"Ooh, now for my second favorite part," says Rarity. The first being the butt massages, of course. She stands up and sits on your face. You love the soft feeling of her tushie pressed against your face. It's like a pillow, but you can still breathe, and do so through your nose, so you don't miss a single whiff of Rarity's dirty, smelly rear end.

She unleashes a flurry of wet, boisterous farts, some of which are long and some of which are deep-pitched, on your face, giggling the entire time. You take immense pleasure in the facesitting face farts. You couldn't have asked for a better time with Rarity.

After about seven minutes in this position, she stands up. "That wasn't too much, was it?" She sniffs her armpit. "I smell so foul a skunk would faint within six feet of me."

"And I love it more than I can describe." You stand up and give her a hug.

"It's time for dinner now." Rarity opens the closet door and a huge wave of visible stench rushes out as you step out of the closet. The two of you walk to her kitchen, and Rarity keeps emanating a visible stench.

That night, you and Rarity sleep in her bed. The bedroom is full of the smell of her body odor and farts, and you love laying next to her while she's gassy and smelling like this. She farts in her sleep a few times before you too fall asleep.

...

The following morning, you and Rarity wake up. Rarity stretches her arms so that the smell of her armpits reaches you again, then lets out a short, loud, wet fart. "This has all been very fun, but it's time I took a bath. Would you like to wash me in my smelly outfit?"

"That'd be great!"

You put her over your shoulder with your hands on her butt as you walk to the bathroom. It's not a long walk but she farts a few times along the way, and you pat her butt lightly. You know she loves this. Once inside the bathroom, you put her down and she fills the tub with warm soapy water. "I take it you know how do do this?"

"I'm pretty sure I do." Once the tub is full, you turn the water off for her. "All right, Rarity. Into the tub."

"Hold on, I need to use the bathroom first." Rarity sits on the toilet and starts to pee in her stinky shorts. She sighs of relief as the pee passes through them and splashes into the toilet.

"Wow, Rarity," you say.

She giggles. "I'm already filthy and smelly and I'm going to get wet anyway and cleaned up, so why not?"

"Why not indeed?"

Once Rarity is finished she climbs into the tub, still in her dirty outfit. You pour some water over Rarity's hair and lather it with shampoo. Then you take a bath scrubber with liquid soap and scrub Rarity's back and sides, creating suds. You scrub her armpits for several minutes. As you do so, she farts in the tub, bubbles appearing around her. She giggles at the sight of this.

Once her top half is clean, you say "All right, let me wash your dirty rear end."

Rarity positions herself with her behind in the air. You pour a large dollop of soap onto her butt and start scrubbing it vigorously with the bath scrubber for three minutes. Then you spend another four scrubbing it with your hands, absolutely coating it in suds. Her shorts are perfectly clean by now and she probably knows it, but you both want this to go on as long as possible.

Eventually, you stop and have her sit back down in the tub as you wash her legs and her feet. Then you pour a bucket of water over her hair to rinse it out, and drain the water, rinsing her off one more time with the shower head. She steps out of the tub, sparkly clean and dripping wet.

"That was fun," she says. She sniffs her armpits. "I almost forgot what it was like to smell clean."

You sniff Rarity. All you can smell on her is soap. "You're absolutely stunning, wet or dry, clean or smelly."

"Why thank you, darling. I do hope we can continue to have kinky fun when we're together."

"Even when you're not smelling bad, I'm sure we will."

A loud fart makes its way out of her. PPPFFFFFFFFFRRRRRRRT! She giggles and you slap her butt playfully.