What are some negative physical effects caused by visible smoke during a fire?

Visible smoke during a fire has several negative physical effects, and one of the most significant is reduced visibility and irritation. When smoke is present, it can severely hamper a person's ability to see and navigate safely, increasing the risk of disorientation and accidents. This is critical in a fire situation where quick and safe exit strategies are necessary.

Moreover, smoke contains a variety of harmful particles and gases that can cause irritation to the eyes, nose, throat, and lungs. This irritation can lead to coughing, difficulty breathing, and a sense of panic, further complicating escape efforts and increasing the danger faced by individuals exposed to the smoke.

While other potential effects like heat exhaustion, rapid heart rate, and skin burns can occur in a fire environment, they are not directly caused by visible smoke in the same way that reduced visibility and irritation are. Focus on the physical impairment caused by smoke's presence highlights its immediate dangers in fire scenarios.