By scanning things, I can pick up on surficial qualities, but that'd be the extent of it.

However, I'm not human. I wouldn't be ingesting it as such, as most substances don't absorb into my body, but I would be touching it to my tongue. That's the only way I can take a look at the chemicals in a sample. Even a pinhead amount would be enough.

(but, you know, the same hazards still remain.)

You said something about unaffected samples... do you know what those are comprised of, if not the incense itself?