At its core, garbage smell results from the decomposition of organic materials. As food scraps, yard waste, and other biodegradable refuse break down, bacteria and fungi play a significant role in the process. These microorganisms break down the materials into simpler substances, resulting in various gases, many of which are odorous. Compounds such as hydrogen sulfide, ammonia, and volatile organic compounds (VOCs) are some of the culprits behind the foul odors we associate with garbage. The pungent scent often conjures images of overflowing bins, neglected dumpsters, and landfills sprawling across the horizon.