I think what we associate with the "odor of cocaine" is actually the chemicals used in production. I started in the 70's, and at that time most coke around here had a smell a bit like ether and/or acetone. I was an IV user, and as such I came to associate those odors with the rush. I quit in the mid-80's, and had none until '07. Then, I used over a period of a few months. I found that the product then had none of the odor I had come to associate with cocaine.
My thought is that there must have been quite a shift in extraction techniques during the intervening years. My use was not limited to a few lots, rather I had many samples from several areas of the country. The quality was there, but I never experienced what I remembered. I do believe the "real McCoy" is odorless. Interestingly enough, I have read in several places that some folks feel Tom Ford's "Tuscan Leather" EdP "smells like cocaine". I, of course, got some.....and while its a fine scent, I've never had any coke even vaguely like it!