Wealth on Instagram: "This small wooden “dollhouse” explains why fires become deadly faster than people expect. 🚒💨 Firefighters use these training models to visualize airflow, oxygen intake, and pressure buildup during a real house fire. When a door or window opens, fresh oxygen rushes in, feeding the flames and accelerating heat, smoke, and fire spread within seconds. This demonstration shows why closing doors behind you during a fire can slow flame growth, reduce toxic smoke movement, and bu