Seeker, you are probably familiar with Elaine Aron's books on The Highly Sensitive Person. In at least one of them she describes a technique for fending off these vibes from other people by silently sending out your own message, something like "Sorry, not receiving. Sorry, not receiving now." Something like that. I know that has to do with "vibes" and so forth, but if you know Aron you know she takes a relatively traditional approach to these things. I've used it myself to block ugliness or neediness coming my way when I don't want it. It has the effect of kind of boomeranging that incoming stuff off of you before it can sink in.
Good luck with all this.