Just a PSA (not trying to harp on parent commenter, just taking their comment as an opportunity to soapbox) but never, ever, every go into a room or building that is getting smokey from something burning. It's how you N+1 the casualty/death count in a fire. Unlike the heroes in films and movies, you don't have Plot Armor.

It is incredibly common that people think they can just go back in holding their breath or stay low or cover their mouth with their clothing like in hollywood...but they take a bit of a breath, cough, and suck in lungfuls of the smoke, and are almost immediately incapacitated.

A lot of things, like PVC for example, release chlorine gas when they burn, which immediately turns your lung mucus into hydrochloric acid. All the other things in the smoke is incredibly bad for you both short and long-term, too.

The smoke is also flammable. Opening a door lets in oxygen, and oxygen + fuel + heat = a fuckton of heat, very suddenly.

I really wish that writers would suffer legal liability for shit like showing people entering a building with their shirt over their mouth - it's where people get the idea that they can so that sort of stuff.