👉 Barn fumes refer to the noxious gases that can accumulate in animal feed storage areas, particularly those containing moldy or decomposing hay, silage, or other organic materials. These fumes are primarily composed of ammonia, hydrogen sulfide, and various volatile organic compounds (VOCs) produced by microbial activity. Ammonia, a common byproduct of protein breakdown, can cause respiratory irritation and discomfort in humans and animals alike. Hydrogen sulfide, known for its strong, rotten egg smell, is highly toxic even at low concentrations, posing serious health risks such as nausea, dizziness, and in severe cases, death. Proper ventilation and regular monitoring are essential to mitigate these dangers and ensure a safe environment for both farm workers and animals.