How Much Do You Know About Everyday Infectious Diseases?How can hotel air conditioners spread Legionnaires?93%Next Correct Incorrect Legionella thrives in AC units! Mist inhalation causes severe pneumonia. Newer systems have anti-microbial ducts. How can hotel air conditioners spread Legionnaires? By fogging rooms Blowing contaminated mist Recirculating dust Lowering humidity 93%