Which of the following is an effect of smoke exposure on the respiratory system?

Increased mucus production and airway irritation are well-documented effects of smoke exposure on the respiratory system. When smoke enters the airways, it can irritate the lining of the respiratory tract, leading to inflammation and increased mucus production as a defensive response. This mucus can clog the airways and make breathing more difficult, contributing to chronic conditions such as chronic bronchitis.

The irritation caused by smoke can also lead to symptoms like coughing and wheezing, as the body attempts to clear the excess mucus and respond to the irritants in the smoke. The presence of irritants from smoke exposure disrupts normal lung function, leading to various respiratory issues and making this answer particularly relevant in understanding the impact of smoke on respiratory health.