What should passengers do if the cabin is filled with smoke?

When the cabin is filled with smoke, covering the nose and mouth is critical for protecting the respiratory system. Smoke can contain harmful toxins and particulate matter that can lead to serious health issues or even unconsciousness if inhaled. By using clothing, a travel pillow, or any available materials, passengers can help filter the air they breathe, reducing the immediate risk to their lungs and making it easier to remain alert and aware of their situation.

This action is especially important because it allows passengers to better manage their breathing and assess their surroundings without succumbing to panic or harmful inhalants that can accompany smoke-filled environments. Staying calm while doing so is also vital, as panicking could lead to poor decision-making, hindering their ability to evacuate if necessary.