Not everyone produces the smell, and not everyone can smell it.

Interesting info about the smell from Web MD.

It says, among other things, that the smell develops in as little as 15 minutes. 46% of 115 British citizens produce the odor while 100% of 103 Frenchmen (and women) do. Interestingly, 10% OF 300 Israelis could not DETECT the odor.