I think the thing to remember is that it is not so much Nurses not respecting CNA's as it is people not respecting people. Through my years, I've seen Nurses disrespect CNA's, Doctors disrespect Nurses, as well as CNAs disrespecting Nurses. I think the problem is about individuals and their perceptions.
I understand what you are talking about, but it is not exclusive to Nurses. I am sure you have seen CNAs disrespect Nurses, haven't you? And yes, when I worked as a transporter, some Nurses did treat me better when they found out that I was a Nursing student. As in...I'd say "hi" or ask for help getting a pt onto a stretcher and they would never even speak to me, but one day they would walk up to me and say, "I didn't know you were a Nursing student." However, I also had fellow transporters that repeatedly disrespected the Nurses. So, maybe some of the animosity came from this.
My suggestion is to always remember how this makes you feel and never make another person feel this way. House keepers, maintenance, CNAs, Nurses, Doctors, RT, PT, OT, etc...ALL matter and we are all on the same team with the same goal.