Sulfite sensitivity is a condition where individuals experience adverse reactions to sulfites, which are chemical compounds commonly used as preservatives in foods and beverages. These reactions can include symptoms such as headaches, hives, and difficulty breathing. People with asthma are particularly at risk, as sulfites can trigger asthma attacks. Sulfites are often found in products like wine, dried fruits, and some processed foods. While most people can consume sulfites without any issues, those with sensitivity must read labels carefully and avoid products containing these additives to prevent allergic reactions.