Black Swallowtail Caterpillar on Dill

Because I grew up seeing these so much. I can't eat dill. The smell just gives me images of caterpillar in my head.

I saw one of these butterflies in my yard last week. Hoping they were making a stop by my carrots since I don't have dill

I walked by a woman whose outdoor plants were eaten up by these guys, and she said, "Want some caterpillars?" People used to keep them as pets sometimes, which sounds nice, but I didn't have any way to take them.

aw look at their stubby little legs and fat bodies. so cute

That's a polite way of saying ass eating caterpillars

Curious; are these poisonous?