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#16 - SunilCCXXXVII (11/18/2012) [-]
The onion only makes you cry when you cut the root...
User avatar #18 to #16 - ilovehitler (11/18/2012) [-]
Actually, I'm pretty sure it's the onion itself. Something about cutting enzymes that then combine with other things, forming a reaction that lets off that gas.
User avatar #29 to #18 - JklnHyd (11/18/2012) [-]
When you cut into an onion, the gas released forms very mild sulfuric acid upon contact with the moisture on your eyes.
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