Honestly, I don't even worry about it. I still get some odd looks once in a while, but I am used to that. I've been a "freak" my whole life, weather I was sporting a huge mohawk or pink plaid pants and mis-matched shoes.
I have always been "myself". Used to get me in a lot of fights when I was younger, but I won my share, and I considered it a small price to pay. I know that I helped influence a lot of the people who knew me to do the same..to be themselves and celebrate who they were. It is a good feeling.
Thankfully my employer is one of the best in the country for anti-discrimination policies, and the people I work with all seem very friendly and accepting.
So, I don't tell every person I meet that I am trans, but I don't bother to hide my true self either. I am lucky. And I feel sorry for those who still face oppressive, discriminatory environments. I long for the day that all humans can simply accept people as people and not judge them based on primitive prejudice.