Care what people think about you?
Ya. If you didn't, you wouldn't wear deoderant, brush your teeth, groom yourself, etc.
i dunno. when i go without a little too long, im the one who starts to feel gross and all uncomfortable. im not really so much worried about others.
it totally messes up my qi.
Depends on the person. If I like them then yes I do if I don't then they can think whatever they want. I know who I am and so do those that care about me that's all I care about