That means that they readily become and stay airborne. This greatly increases one s risk of exposure. The small size of the Penicillium spores gives it aerodynamic properties that increase the probability that they will penetrate more deeply into one s respiratory system. As a consequence, Penicillium is one of the more common causes of hypersensitivity lung reactions as well as lung disease. Long-term exposures can cause permanent damage to the lungs.
Anaphylactic shock is an extreme reaction and can in many cases be life threatening.
As such, your husband should not attempt to conduct any mold remediation activities in your house. Engaging the services of professionals would be the most appropriate course.