It's worth mentioning this isn't an isolated instance sadly
Fires on large-scale animal farms, or factory farms, are surprisingly common. Over the last decade, at least 6.5 million farmed animals, mostly chickens, perished in barn fires in the US
The true number is likely significantly higher, AWI notes, because not all states have the same reporting requirements, and because farm animals are property with essentially no legal protection from suffering
Looks like we are getting at the post-dystopian check point sooner than thought
That one instance has the power over millions of creatures of any species and for whatever purpose, incarcerated in one big container, to do with them as they please, is more horrific than any story i read so far.
Even more so that we are just starting to find out how intelligent animals really are.
Extinguishers wouldn't do much, but you may mean fire sprinklers, but that's probably never going to be installed. You'd have to inspect, test and maintain that system, and who wants to invest time and money in that.
It will smell of burned meat (not carefully grilled), burned hair (same material as feathers), and burned shit. Along with whatever infrastructure went up with it.