What is one key characteristic of sulfur dioxide?

Sulfur dioxide is a significant air pollutant that can have various adverse effects on human health, particularly concerning respiratory issues. Exposure to sulfur dioxide can irritate the respiratory system, leading to symptoms such as coughing, throat irritation, and shortness of breath. This gas can exacerbate pre-existing respiratory conditions like asthma and bronchitis, illustrating its harmful impact on health when inhaled at higher concentrations.

While sulfur dioxide may have some uses, such as in agriculture as a preservative or fungicide, this does not outweigh its harmful health effects when inhaled. Thus, identifying it as a potential cause of respiratory problems is critical for understanding its role in environmental health and safety.