Used to hate flirting. Now I have no problem. Anywhere, any time, with anyone.
I just learned to ignore the blank looks, the derision in voices, and the eww!! faces, and keep moving forward.
It's rather obvious when someone just plain dislikes you, or is uncomfortable with you flirting with them, at least for me it is.
I pity the people who dislike it. They are soulless automatons.