Should you take a deep breath before donning your gas mask?

Taking a deep breath before donning a gas mask is not recommended because it can trap exhaled air and create a negative pressure situation inside the mask when it is applied. This can lead to an improper seal, which can undermine the mask's effectiveness in providing protection against harmful substances. The primary goal of donning a gas mask is to ensure a secure fit that allows for optimal respiratory protection, and taking a deep breath before putting the mask on can counteract that goal by potentially allowing contaminated air to enter the mask.

Proper procedure for donning a gas mask involves ensuring that the mask is fitted securely to your face without taking a deep breath first. This helps maintain the mask's integrity and enhances overall safety. Therefore, it is crucial to prioritize the correct techniques for wearing personal protective equipment in stressful situations, ensuring that the training received reflects these guidelines for effectiveness.