People who smile even when saying something unpleasant, make me uneasy..

Yes... I had a female boss like that once. As I have always said, "Big smiles hide big fangs."

Like this guy. He makes me feel like lunch.

Definitely instills a lack of trust of that person.

true gives them such a villanous look

I grew up in a part of the US where they are taught 'if you can't say anything nice, don't say anything at all', so you will commonly hear 'oh bless your heart' but what they really mean is 'you're a stupid idiot'

Hehe

The exact opposite.