Originally, Toxic effects from mold were thought to be the by-product of exposure to the mycotoxins of some mold species, such as Stachybotrys chartarum (S. chartarum). However, informatics are suggesting that the so-called toxic effects are actually the consequence of chronic activation of the immune system, leading to Mold Inspection Palm Beach chronic inflammation. Subjects indicate that up to 25% of the population have the genetic capability of experiencing chronic inflammation to mold exposure, but only 2% literally experience such symptoms.

Mold colonies can grow inside house structures. The main problem with the presence of mold in buildings is the inhalation of mycotoxins. Molds may produce an identifiable smell. Enlargement is fostered by moisture. After a flood or large leak, mycotoxin levels are higher in the building ordinance even after it has dried out (source: CMHC).