Carnage is a real word, and it's definition isn't broad enough to encompass a mass vomiting and diarrhea event.

carnage /kär′nĭj/ noun

Massive slaughter, as in war; a massacre. Corpses, especially of those killed in battle. Flesh of slain animals or men.

Corpses, especially of those killed in battle. Flesh of slain animals or men.

Flesh of slain animals or men.

I say this not to be pedantic, but because I had to read the article to confirm this wasn't a mass death event.... because words matter.

Doesn't matter that it was a quote, the editor shouldn't have run with it. Find another quote, or use your own words. JFC.