To Kathi Green, the odor wafting through her Carroll County community each growing season smells like rotting flesh. “If you’ve ever smelled a dead animal that’s sat around for a day or two?” Green said. “It’s overbearing. It just takes your breath away.” Over the past two years, the stench has started in March, when farmers across the state are allowed to begin spreading fertilizer on their fields after a winter hiatus.