Hundreds of other airborne pathogens are common in the air that we breathe each day. Exposure to these is often not a problem as the immune system destroys them. It is a problem, however, when the immune system has been “overworked” by such common situations as fighting a cold. A person who is continually exposed to certain chemicals or pathogens, can develop a “hypersensitivity”. This usually explains why someone who has not suffered from exposure suddenly becomes sensitive to it and becomes “sick”.
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There are a few fungi (including moulds) which can have a detrimental effect on humans under certain conditions.
Moulds are organisms that exist as decomposers and are why we aren’t hip deep in old trees. This means that moulds have some unique and interesting characteristics.
When mould spores are in a high enough concentration, humans can undergo some health effects. These can be as varied as asthma, infection, or toxic effects.
Humans aren’t the only things effected by mould. Buildings themselves are often under attack by moulds. However, the effects are vastly different. Click the link below for more details.