I do not taste a flavor when I apply it, but I do not get it inside my mouth. I also do not smell anything when I apply it. It does not have perfume. I have multiple chemical sensitivity so I know what you mean with these questions.
The store I bough tthis at only had the anti bacterial in orange or apple. I picked orange because I thought it if staine dmy lips, I would rather have an orange than green tint. But it does not stain my lips.