Author's Notes:

Unless otherwise specified, they're wearing the outfits we first saw them in (or else identical ones): Rainbow Dash's smelly black compression shorts, Rarity's purple skirt, Pinkie Pie and Applejack's tight jean shorts, Fluttershy's green skirt, Sunset's jeans, and Twilight's purple Legend of Everfree shorts.

The night of the day Rainbow Dash beat Indigo Zap and gave her a bath, Rainbow Dash was at Cherry Fizzy's having dinner with him.

"And it was really fun giving her a bath," said Rainbow Dash. "I'm not even sure if you'd be able to handle sniffing her up close."

Cherry sniffed Rainbow Dash. "Well, I love sniffing you up close. Aside from when you were clean, you've always smelled just the way I like you."

Rainbow blushed a little. Then...

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A booming, deep-pitched fart emitted from the smelly girl's rear. It lasted nine seconds. Rainbow giggled.

"Nice one, Rainbow Dash," said Cherry.

...

Sunset Shimmer, meanwhile, was at Flash Sentry's house. They were sitting on the couch together in their pajamas, watching The Return of Tambelon.

Sunset farted loudly. She giggled, not even blushing because she knew Flash liked it.

"It's one of those times, isn't it?" he said.

Sunset farted again in response.

"Would you like a butt massage?"

"I'd love one."

A few seconds later, Sunset was on all fours and Flash was caressing her rear with both hands. He loved the way her butt felt. It was so soft, and it looked sexy in her pajamas. Sunset enjoyed it as well, and kept farting in her boyfriend's face, which made it all the more enjoyable for him. They usually did this rather than having outright sex.

...

"You can't be serious," said Rarity the next day.

"I'm being completely serious right now," said Rainbow Dash. "Her name is Indigo Zap, and she smelled twice as bad as me! I actually couldn't stand the smell of her armpits and butt. She washes once a month at most. She doesn't use toilet paper, and whenever she has to pee she does it in her shorts."

"Wow. She would smell worse than you."

"But, she doesn't now. She challenged me to some sports competitions, and we took a bet, where the winner would give the loser a bath. I remembered everything from the bath you gave me, and the one I gave you. And don't worry, I didn't tell her about it. I only told Cherry, like I said. I did tell her I gave someone else a bath, but I didn't say who. And, I think I persuaded her to wash her hair like I do. I can't believe I let my hair get like that."

"That's wonderful," said Rarity. She gave Rainbow an affectionate hug, holding her breath so as to not catch a whiff of her, and making sure not to touch her grimy outfit with her hands.

Then, Pinkie Pie's van arrived. Rainbow Dash and Rarity got into it, for they were going to Mount Aris today.

Rainbow Dash sat in the back seat next to the right window (all of which were open), with Sunset sitting next to the left window and Applejack sitting between them. Fluttershy and Rarity sat together in the middle seat. Twilight sat in the front passenger seat, and Pinkie was driving, sitting on a towel in case Rainbow or Sunset farted, though she had used the bathroom before picking up the girls.

Driving with the windows open, there was no need for Rarity to use her air freshener, as she couldn't smell Rainbow Dash, and Sunset wasn't farting at the moment.

It was about a 20-minute drive to Mount Aris. Once they parked, Twilight paid at the front desk, and they all got into a gondola big enough for seven people.

As soon as the door was closed, Rarity took out her can of air freshener and sprayed. To her dismay, it was empty.

"Oh no, I'm all out of air freshener."

"We'll just have to put up with the smell," said Twilight. "Maybe next time you should keep a spare handy in case you run out."

"That sounds like a good idea," said Rarity. "You are so organized, darling."

Only a minute in, the gondola was filled with Rainbow Dash's odor. Rarity, Fluttershy, and Twilight held their noses, and Rainbow giggled sheepishly. Applejack, Pinkie Pie, and especially Sunset didn't mind.

"Sorry about the smell," said Rainbow Dash.

"Oh... it's all right," said Rarity, still holding her nose. "It's my fault I ran out of air freshener. Just don't... break wind."

"I don't think I'm going to."

Suddenly, the gondola stopped. The girls looked out the window and saw storm clouds in the sky.

"Oh, I hope this storm doesn't go on too long," said Rarity.

"Storms don't last long," said Twilight. "We'll be moving again before you know it."

"I hope you're right," said Fluttershy, fidgeting slightly where she sat. "I have to go to the bathroom." She felt less shy about saying it to her friends now.

They waited and endured Rainbow's foul smell for another seven minutes before there was a bright flash of lightning, followed immediately by a very loud crash of thunder. Fluttershy let out a squeak and a whimper, and tried to look small.

Three minutes later, the storm clouds cleared, and the gondola began moving again.

"Finally," said Rarity.

"Uhhhh..." groaned Sunset, looking tense.

"What's wrong, sugarcube?" Applejack asked her.

"It's one of those times," Sunset replied.

"Darling, be a dear and hold it until we get to the top," said Rarity. "It smells bad enough in here already."

"I'll try," said Sunset.

She held it as long as she could, sweating from the effort, but they were three quarters to the top when she couldn't hold it anymore. A long, explosive, wet fart erupted out of her. She blushed and giggled nervously. "Excuse me..."

Rarity, Fluttershy, and Twilight held their noses tighter and tried not to breathe too deeply.

"Phew," said Applejack, fanning the air with her hat.

Pinkie burst into a fit of uncontrollable laughter.

Fortunately, it wasn't much longer until they reached the top. They got out of the gondola as soon as the door opened. Rarity took deep breaths of fresh air.

"Fluttershy, there's a bathroom up here," said Twilight, pointing to the building.

"Um..." Fluttershy blushed. "I don't have to go anymore. Not after that thunder."

"You're not the only one," said Pinkie. "I couldn't help it! It was so funny when Sunset farted! If anyone asks, we'll say you spilled your drink. Ooh, as a matter of fact..." Pinkie pulled a can of Sprite out of her backpack and shook it vigorously. "Want a drink?"

"I'd love one," said Fluttershy. She knew what Pinkie was doing and was extremely grateful. She took the can from Pinkie, opened it, and braced herself. Clear soda burst out of the can, drenching Fluttershy completely. She squealed a little at the sudden cold feeling, but she felt much better now. Pinkie immediately did the same to herself, though from the way she giggled, it seemed to be more for fun than embarrassment of her accident. Then Twilight pulled out a towel and patted them dry. She knew their outfits would still be wet, but at least they wouldn't be dripping.

"I'm so sorry about back there," said Sunset. "Rarity, I can understand if you don't want to have a friend who farts so much."

"Or two who smell bad," said Rainbow Dash.

"Or three who, um, wet themselves," said Fluttershy.

"Don't you dare think that way," said Rarity. "I admit, I'd prefer if you weren't like that, but you're all still very good friends and fun to hang out with, and I'm not going to let a few unladylike quirks get in the way of our friendship."

They all gave her a hug.

"As a matter of fact," said Rarity, once the group hug was over, "Sunset, you can break wind as loud as you want up here. I don't mind this time. Let it all out before we go back down."

They explored the mountain, Sunset letting loose with one loud fart after another, and Pinkie laughing at each one. They all had fun, even Fluttershy.

Then, they went to the building to get some food. Sunset, Rainbow, and Pinkie stayed outside; Sunset because she was still gassy and didn't want to stink up the building, and Rainbow and Pinkie so they could hear Sunset's farts and laugh at them. Fluttershy, Applejack, Rarity, and Twilight came out with food for them, including an extra large slushy for Pinkie.

Once they finished eating, they continued to explore the mountain, spending about half a minute looking at the lake at the top of the mountain which contained many kinds of sea creatures. Twilight and Fluttershy got into a submarine pod to go underwater and look at the creatures. Twilight brought a towel for Fluttershy to sit on, though her dress was now damp rather than wet.

Rainbow Dash and Sunset emerged from another submarine pod moments after Twilight and Fluttershy's ride was done.

"You might want to let that one air out a bit before someone else uses it," Rainbow told a staff member, who quickly picked up a can of air freshener much larger than the ones Rarity used.

As they walked away from the lake, Sunset stopped farting. Her gas was gone, at least for now. Her jeans smelled of farts, but one had to sniff her butt to be able to tell.

After Fluttershy made a quick trip to the bathroom, they were ready to go back down.

They got the same gondola they had taken up. Fluttershy and Pinkie sat in the same spots as before, and the ride down went smooth, so they didn't have to sit through Rainbow Dash's stench for long. Sunset didn't fart either.

Once they reached the bottom, Twilight took a small cloth out of her bag and wiped down the spots where Fluttershy and Pinkie Pie were sitting, so they'd be dry for the next person to use it. Then, they returned to the van, with Twilight setting a second towel on Fluttershy's seat, and driving with the windows open as usual.

"Aside from the smelly ride, that was rather fun," said Rarity.

"That was one of the most fun trips EVER!" said Pinkie.

"I especially liked the underwater ride," said Fluttershy.

"I knew you would," said Twilight.

"Thanks for not being disgusted at me farting so much," said Sunset.

"Any time," said Rarity. "It did have the effect I so desired. I might not like it, but I know you can't help it, being a pony and all. Besides, I was most unladylike for two weeks last summer." She blushed, remembering how loud she farted in front of the others on her bet with Rainbow Dash.

Pinkie suddenly felt the slushy she drank catch up to her. But, she decided to try to hold it. The drive back wasn't that long.

Rainbow Dash was also feeling her lunch catch up to her. She wasn't sure she could hold it. She lifted both her legs slightly.

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