That is very accurate! A good portion of the Greys are simply "made" to do tasks, and once completed and recycled, so ya that would make sense they had a bit of a aroma.
There are other Tall Greys that tend to be more sentient compared to the little stink bombs they deploy for tasks.
It makes sense!
I could never get a reply from my mum whenever I would ask what they looked like
when she was abducted and left bleeding on a remote, hidden grassland next to the woods.
My family have all been through a lot.