While it's true that a large gas cloud, known as a nuée ardente, was responsible for the deaths of almost 30,000 people in 1902, it's important to note that this cloud was not only gas. It was a mixture of hot gas, ash, and rock fragments, moving at high speeds and reaching temperatures of over 1,000 degrees Celsius.

This devastating event is a stark reminder of the destructive power of volcanoes and the importance of understanding and monitoring their activity.