If you mean to use a different definition of aura, as in just a glow of light, then sure, technically all living matter has an imperceptible aura.
Could these UPEs play some kind of way into extremely short distance cellular interactions? Yes!
But thats... not what people mean, 95% of the time, when they're talking about a person's aura.
This is the whole problem of using woo woo terms.
You can't conflate two different meanings of words and then act like that is not what you are doing.
You also should specify what you mean, in cases where a word has different meanings in different domains.
- Myself, from the comment you replied to.