People try to remove the mucus by coughing. This is smokers cough. Smokers get chronic bronchitis because the cilia aren't working. None smoker's get acute bronchitis. Bronchitis is caused by an infection which makes the body produce more mucus, so non-smokers' cilia can remove the mucus and the bronchitis goes.
Tobacco smoke can cause sore eyes, throat, and can cause headaches.
It can irritate babies and make hay-fever and asthma worse. Pregnant mothers who smoke have smaller babies, which means the child may be weaker. Heart disease is three times more common amongst smokers. Smoking increases and encourages fat to be deposited on the artery walls and nicotine narrows them. This leads to chest pains and perhaps a heart attack.