Amold spore has a negative impact on the respiratory system, and blue Mold Blue mold is caused by a fungus spread by wind-borne spores. Given these facts, what spread by wind has a negative impact on the respiratory system among the following options:
- fungus
 - rain
 - disease
 - laughter
 - clouds
 - influenza
 - viruses
 - bacteria


 

 fungus        