Thank you. You're right - as well as many others in this thread. We'll dispose of the plant.

If it's solanium nigrum, the leaves will smell like tomatoes when you crush them.

Solanum nigrum or similar (frequently grows as a weed, so it might not be what was planted originally).  Don't eat it unless you are absolutely certain of the ID.

Agree. Definitely a species of nightshade.

It's a species of nightshade, can be deadly, do not eat.

We were pretty sure it was a chili pepper plant, but after seeing that the fruits are turning purple and seem much like berries, we're not so sure anymore.

Forgot to move the label when replanting from propagator... What is this plant?