Raw ONION on bottom of the feet to take away illness. "During the night, I started feeling good. I mean really good! I felt tingly, like my blood was being cleansed. Last night Evan (11) was coughing. I sliced a purple onion took snug socks and put it on the bottom of his feet. To boost my own immunity, I did the same." Onions are known to absorb toxins. In fact, during the days of the Plague in England, folks would keep chopped onions around to absorb toxins to clean the air.