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Kenze Messman’s service dog Makki could smell Kenze’s histamine levels rising before she could. Here we go again, Kenze thought. Her next episode was imminent. She had 30 seconds, maybe 60 if she’s lucky. Makki was getting Kenze out of her wheelchair, a series of maneuvers that you don’t see a dog performing every day. Best to be on the ground for what’s coming. Kenze would prefer it didn’t happen at all. And most of all, that it didn’t happen at the local Walmart.