Fact 1: Amold spore has a negative impact on the respiratory system.

Fact 2: Blue Mold Blue mold is caused by a fungus spread by wind-borne spores.

Given the two facts above, answer the question "What spread by wind has a negative impact on the respiratory system?" with the following options: 
- fungus
 - rain
 - disease
 - laughter
 - clouds
 - influenza
 - viruses
 - bacteria


 

 fungus        