Fungi are microorganisms that are commonly found growing indoors (e.g on building materials). Fungi Produce airborne contamination in the form of conidia (spores), volatile organic compounds (VOCs), and mycotoxins. Typical signs of fungal contamination include water damage, high levels of humidity, and physical presence. However, these signs cannot be used as sole indicators of fungal contamination. Newly constructed buildings with no history of water damage and no physical signs of fungal. When fungi infest buildings, they can induce allergic reactions, toxic poisoning, and symptoms of Sick Building Syndrome (SBS). Common complaints associated with exposure to some fungi include allergic reactions, eye and sinus irritation, sore throat headaches congestion nausea. Current methods for detecting microbial contamination include visual inspection, air sampling and analysis by gas chromatography and mass spectrometry, and culture analysis. An alternate method to detect microbial contamination involves the use of a sensor ray.