I have read that some places in Asia use MSG to kill dogs they use for food. But, I don't eat dogs. I have never noticed a problem from using MSG laden rubs or other foods with it either. YMMV.
Jambo Pit - UDS - Lang 60 (Sold)
18.5" & 22.5" Weber Kettles - Smokey Joe and Mini-WSM - Bubba Keg - #2 La Caja China
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I am Obsessive Compulsive about BBQ. Google it.