This photo was not taken in Dracula's Vampire Palace and it certainly wasn't close to Halloween when a spooky cobweb is a common sight.
Fires are not only destructive to the structure they consume but they're also a health hazard. Smoke is the leading cause of fire deaths, exceeding burns by a three-to-one ratio. Direct exposure to smoke is harmful to your respiratory system which gives us grounds to advise homeowners to get out fast and avoid contact with the structure if at all possible.
These cobweb-like shapes appear when plastics burn, the smoke carries a stronger ion charge than when wood, cotton or paper burns. Sometimes, this causes smoke residue to form “smoke webs” where the walls and ceiling come together.