It does. You betcha.
It doesn’t matter if you dress sharply, look sloppy, smell bad, forget your tie when everybody else has one, pick your nose in meetings, and so on – it WILL make an impact. Someone might think, hmmm…this guy/ girl is…weird, smelly, good-looking, seems to be in control, elegant, ugly, skinny, fat, interesting or disgusting. People will think something and you can affect what they think of you. If you think you can’t, you’re in trouble.