Fictional shows about emergency response teams are wildly popular.

The character Tony Ferraris is a firefighter who plays himself on the show.

Therefore, it occasionally gets things wrong from time to time.

Cast of Chicago Fire on set

What is impressive is the fact that they use real fire, according toShowbiz CheatSheet.

However, some firefighters have taken issue with the fire scenes.

Apparently, there is not enough smoke during these scenes.

Chicago Fire cast on set

“[T]he smoke is 90 percent less than in an actual incident.

If you shut your eyes right now, that’s our visibility in an average fire.”