Creep Repellent

You know how you have mosquito repellent? Slather some on your arms and legs on a summer night and you might not get bitten and thus might not get malaria. There are those little electronic things you plug in that keep roaches and vermin out of your house. There are plastic owls you hang in your trees to keep bothersome birds away. We can buy all sorts of stuff designed to keep away things we don't want near us.
   And yet creepy people still manage to get all up your grill, don't they?
   I'm not talking about people with clipboards and an agenda, or homeless people, or those guys who set up a card table outside the grocery store. I don't mind those people, they want to accomplish something. I mean the guy with the obnoxious laugh and the big cowboy hat who sits right in front of you in the movie theater. Or the tipsy office gals who take the booth beside you at the restaurant and talk waaaaaay too loudly about their lady business. Or the guy in the grocery store who isn't following you around but just happens to be on every aisle you are. Or the guy who parks his beat-up white panel van just a little too close to the elementary school.
   Wouldn't it be great if you could just whip out a can of something, spray it in the air, and these people would find somewhere else to be? You could watch your movie in peace, enjoy your meal, and even get your shopping done unmolested. Literally.
   Only thing is, what if you were out and about and someone sprayed something in the air, and then you had an overwhelming urge to run away? How would you explain that one?