Mold can spread quickly through the home by discharging spores into the air. Allowing mold colonies to reach parts of the house that seem dry. Short term exposure to mold is not typically a major concern, but regular inhalation of mold spores can cause a number of health issues, particularly in the young, old or those with respiratory issues. Health problems can include respiratory infections, nausea, agitation, malaise, fatigue, and even deadly neurotoxic complications.