@smartfactdaily on Instagram: "Firefighters use training dollhouses to clearly show how fire, heat, and smoke move inside buildings. These scaled models replicate real fire behavior, revealing how flames and smoke travel through rooms and hallways just like they would in an actual structure.⁠ One of the most important lessons demonstrated is door control. Opening a door or window introduces oxygen that can rapidly intensify a fire and push extreme heat throughout the space, while closed doors ca