Alright, so a quick summary of that post for those who didn't want to read all the text;
- Claire used her Cyndaquil to ignite the smoke and create a smoke explosion.
- Under the smokescreen, Mareep blew open one of the vents and Cottonee slipped into the Lab.
- Mareep reapplied the Cotton spores and then used tackle to jiggle the windows shut.
- Riolu was intercepted by Mienfoo, who's attack had been boosted by Meditate which she'd been using since my last post. How you make of that clash is up to you, @Red Gallade
- Cottonee used Stun Spore to fill the vents with spores, followed by Fairy Wind to diffuse the spores rapidly throughout the Lab.
Most of this took place in around the same time, so I'm open to the argument that the windows couldn't all have been closed before the Stun spore was released. That being said though, you first need to detect the spores against the odds before you can even deal with them. With Riolu outside, I guess your best bet for detecting the spores is Arcanine but its nose is probably clogged up by the smell of soot coming from the Smokescreen and the explosions.
I'm open to more discussion about how you deal with this though.