Dogs always crane their head back at me or come up to me on walks when I am without my (reactive male) dog. I just assume it is because they can smell my male dog.Interesting, I noticed the same! The male dogs in the building where I live either run away with the tail between their legs or if they are bigger and more aggressive still put the tail between their legs but growl when passing by me.
I haven't noticed a change since androsterone though.