One time I was heading to a meeting and rubbing my hands because they were dry. She pulled out her hand cream and and handed it to me. Without thinking I put some on and then remembered how fragrant it was. I said oh no, this might be embarassing in the meeting, and she said no one will know, don't worry about it. About that time another young lady walked over, sniffed the air and said "My someone smells pretty". Then we all laughed.
I don't think I have feminine mannerisms, but on the other hand I don't lumber around like a neanderthal either. When I am dressed in femme, I do practice being more ladylike. So maybe these little things like sitting, hand movements, etc, transfer back into male mode and women pick up on them.