Other dangerous gases that Fred inhales are hydrogen cyanide and nitrogen dioxide. Large amounts of hydrogen cyanide will lead to convulsions, stoppage of breathing, and death, while nitrogen dioxide will chafe Fred's lungs and mucous membranes, and cause his skin and eyes to itch. The second step in the process is as Fred smokes a cigarette, the smoke he inhales contains a number of ingredients that causes negative bodily effects. Fred experiences higher blood pressure, a faster heartbeat, and a shortness of breath. Fred's senses of smell and taste becomes dull, and beginning smokers would feel a hint of dizziness, nausea, and headaches.
Smoking also interferes with digestion, which leads to ulcers of the stomach and intestines.
This problem involves the tiny hairs, called cilia, that line the bronchial tubes. These tiny hairs push foriegn matters out of Fred's lungs. Cigarette smoke damages these tiny hairs or sometimes completely destroys them. The result is that tiny particles from the air and cigarette smoke accumulate in Fred's lungs, which causes Fred to cough constantly. The last step is that cigarette smoking is a major cause of respiratory diseases.