I smoke, am i more susceptible to contracting legionnaires' disease?

Yes: Legionnaires' disease is an infection with a bacteria that causes a pneumonia. It is transmitted in a waterborne fashion, often from cooling towers, humidifiers and such. It is not spread person-to-person. It is treated with antibiotics. Avoiding a source is the best way to avoid infection. Risk factors include smoking, older age, diabetes, lung or kidney disease, cancer, or a poor immune system.

Yes: Male gender, cigarette smoking, chronic heart or lung disease , renal failure, organ transplant, any immunosuppression, some forms of cancer and age over 50 years all predispose to legionaires' disease. As a cigarette smoker you are also at risk for many forms of cancer and for shronic lung disease such as emphysema and chronic bronchitis. Quit.