That is, is sweet basil an acceptable plant in an American toad's vivarium?

I also have in there Autumn fern, chameleon plants, and ivy. I know they're all okay. Tonight I added some sweet basil and then immediately wondered with its pungent odour due to the essential oils it produces if it is toxic to such a little one, potentially. I'm still cycling Lydia's new vivarium, so I'm going to leave it in until I find/receive an answer on this.