While most species of Fusarium are harmless, others can cause costly plant damage or spoil cereal crops through the production of mycotoxins, including fumonisins and trichothecenes. Exposure to Fusarium can even cause potential health issues for humans and animals., , , , In homes and buildings that have suffered water damage or elevated humidity levels, Fusarium is sometimes found in surface and air samples. Exposure to elevated levels of it, as with other types of fungi, may cause al.