the aroma of stinky socks?

What is aroma? Aroma is a strong, pleasant smell. So stinky socks cannot possess aroma.
So we have to edit it into "the odor of stinky socks"?

Context:

A Shot of Anxiety and the World Stinks: How Stress Can Rewire Brain, Making Benign Smells Malodorous
Sep. 24, 2013 — In evolutionary terms, smell is among the oldest of the senses. In animals ranging from invertebrates to humans, olfaction exerts a primal influence as the brain continuously and subconsciously processes the steady stream of scent molecules that waft under our noses.

And while odors -- whether the aroma of stinky socks or the sweet smell of baking bread -- are known to stir the emotions, how they exert their influence biologically on the emotional centers of the human brain, evoking passion or disgust, has been a black box.

More:
http://www.sciencedaily.com/releases/2013/09/130924174150.htm