Researchers studied two types of fungi that cause powdery mildew on plants and can trigger allergies in people who breathe in their spores. They discovered that these fungi contain proteins that act as allergens, including special proteins that help fungi survive stress. The fungi also contain high levels of linoleic acid, a fatty acid that can increase inflammation in the body. This research helps scientists understand why these fungi can cause allergic reactions and could help develop better diagnostic tools for fungal allergies.