You probably know that smoke from a fireplace can make you cough. But can the type of heating in your home affect how often you catch a cold? This survey project compares illness rates across heating types. You create a survey and give it to volunteers. Each person reports what kind of heat they use at home. They also report how often they get respiratory illnesses like colds or coughs. Twelve people completed the survey. The results showed that gas heat users reported the most respiratory illnesses.