What is the effect of toxic gases on individuals with respiratory conditions?

Individuals with respiratory conditions are particularly vulnerable to the effects of toxic gases, which can significantly exacerbate their health issues. Exposure to these harmful substances typically leads to increased inflammation and irritation in the lungs. This response can manifest as heightened symptoms such as coughing, wheezing, and shortness of breath, further complicating the management of existing respiratory diseases.

Toxic gases can disrupt the normal functioning of the respiratory system by irritating the airways and lung tissues, leading to a cascade of inflammatory processes. This inflammation not only aggravates pre-existing conditions like asthma or chronic obstructive pulmonary disease (COPD) but can also trigger acute episodes that require emergency interventions.

In contrast, other options suggest effects that are either neutral or beneficial, which do not align with the known impacts of toxic gas exposure. Improved lung function and reduced allergy symptoms are unlikely in this context, and there is generally no scenario where toxic gases would have no significant effect on individuals with compromised respiratory systems.