Some also do have specific use cases where they work really well, like Tea Tree Oil for acne and nail fungus or Peppermint oil for nausea. Most of them don't do anything though.
I think it's straight up a me thing, I find most perfume overpowering etc,
Have def been around all forms of oil diffusers etc, always to the same result, I wish I enjoyed them, everyone seems to like them so much.
They are just allergic reactions waiting to happen.
Tea tree oil was the only one I think to actually have merit, but I imagine we've been able to reproduce the beneficial part of in a lab. (with minimal risk of triggering allergies)