I didn't realize that was going to be hard to understand, and this wasn't intended to be about semantics. Along the lines of: a : to make physically impure or unclean : befoul, dirty b : to contaminate (an environment) especially with man-made waste and 1. to make foul or unclean, especially with harmful chemical or waste products; dirty: to pollute the air with smoke. and Pollution - Wikipedia, the free encyclopedia