I'm not exactly averse to being hugged, it's a lovely thing from time to time. But right now I'm a bit twitchy about routine hugs. It's all a bit complicated. But well, I don't need to be hugged hello and goodbye every time people see me. A hug if you've not seen me in ages, or offering a hug if I sound like I need one, are both approaches which work much better.
This has been a minor public service announcement, and I hope no-one's offended at it.