What action should you take after observing a white vapor and hearing a slight hissing sound from a propane container?

When you observe a white vapor and hear a slight hissing sound coming from a propane container, it signifies a potential leak or release of gas. Taking immediate action to avoid all possible sources of ignition is crucial because propane is highly flammable and can lead to an explosion or fire if ignited.

By avoiding sources of ignition, you reduce the risk of a fire starting if the gas is indeed leaking. This includes not using anything that could create a spark, such as electrical devices or open flames. In such a situation, ensuring safety by maintaining a distance from the area and allowing ventilation is important.

Sealing the container, moving it indoors, or continuing to use the container as normal could exacerbate the situation, as they do not adequately address the potential hazard of flammable gas escaping from the container. Therefore, prioritizing actions that minimize ignition risk is the correct approach in this case.