On one hand, if I'm watching, say, a zombie movie, I'm not thinking "I bet it's a flower caused this!" I'm thinking a virus or bacteria or some kind of infection. I'd think some kind of mass hysteria before flowers, honestly. That, and if it's a known poisonous substance (like, used for natural pest control), and the usual method of poisoning is ingestion, predatory animals are the last people you'd expect to be affected by it.
On the other, I'm not sure why they couldn't find some trace of the toxin; even if they didn't know where it came from, some trace of the toxin should be around, especially if its, as in the end, treatable, implying that the poison was lingering, and the "savage" aspect wasn't caused by initial, permanent neurological damage.
On one hand, if I'm watching, say, a zombie movie, I'm not thinking "I bet it's a flower caused this!" I'm thinking a virus or bacteria or some kind of infection. I'd think some kind of mass hysteria before flowers, honestly. That, and if it's a known poisonous substance (like, used for natural pest control), and the usual method of poisoning is ingestion, predatory animals are the last people you'd expect to be affected by it.
On the other, I'm not sure why they couldn't find some trace of the toxin; even if they didn't know where it came from, some trace of the toxin should be around, especially if its, as in the end, treatable, implying that the poison was lingering, and the "savage" aspect wasn't caused by initial, permanent neurological damage.