Some of the chemicals you were exposed to are voliatle and clear from the body quite rapidly if there is no added exposure. But some are trapped in the body and won't clear unless the person does detoxes. It could be that you were able to clear out some of these toxins/pollutants in the Liver flush. Keep doing Liver Flushes and include some herbs and supplements to detox the liver. I use H. Clark's Liver Support Tea in between LFs.