Most people leave their bedroom door open at night without giving it a second thought. It feels comfortable, allows fresh air to circulate, lets pets move around the house, and creates a sense of openness while sleeping. For many families, an open bedroom door is simply part of their nightly routine. Yet fire safety experts continue to repeat one surprisingly simple piece of advice: close your bedroom door before going to sleep.
This recommendation is not based on fear but on science. Modern house fires spread much faster than they once did because many household items are made from synthetic materials that burn rapidly and produce thick, toxic smoke. In an emergency, every second matters, and one ordinary bedroom door can become one of the most important barriers between you and danger. The reason that simple habit can make such a difference becomes clear when you understand what happens during a fire…
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