What is one of the key first aid steps for respiratory pesticide exposure?

Loosening tight clothing is a crucial first aid step in cases of respiratory pesticide exposure. This action facilitates easier breathing by reducing constriction around the neck and chest, which can help alleviate any respiratory distress the person may be experiencing. When someone is exposed to pesticides, especially in a way that affects their respiratory system, tight clothing can hinder their ability to breathe comfortably, potentially worsening their situation.

While other options might seem relevant in certain contexts, they do not address the immediate need for improving airflow and comfort in an individual experiencing respiratory issues. Contacting a poison center, for instance, is important for medical advice but should follow the immediate steps to ensure the individual's breathing is not compromised. Washing the skin is typically a response to dermal exposure rather than respiratory issues, and artificial respiration should only be performed by trained individuals who can assess the situation adequately, making it impractical without calling for help first.