Similarly, when wood goes through a period of wetting, then drying, it can eventually warp and cause walls to crack or become structurally weak. Yes, if there is moisture available to allow mold to thrive and multiply. A shortage of air for these appliances can result in back drafting of dangerous gases such as carbon monoxide into the home. To prevent back drafting of air, you need either open vents or a ventilation system that brings fresh air into the home to replace air that is exhausted out. Have your local utility company or a professional heating contractor inspect your fuel-burning appliances annually .
Mold is found everywhere, indoors and outdoors.
It is common to find mold spores in the air of homes and growing on damp surfaces. Much of the mold found indoors comes from outdoor sources. Therefore, everyone is exposed to some mold on a daily basis without evident harm. Mold spores primarily cause health problems when they enter the air and are inhaled in large number. People can also be exposed to mold through skin contact and eating.