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

Fact 2: Sinusitis Sinuses are a part of the upper respiratory system.

Given the two facts above, answer the question "What can have a negative impact on the sinuses in a body?" with the following options: 
- mold spores
 - A virus
 - humid air
 - warm water
 - warm air
 - Pesticides
 - viruses
 - disease


 

 mold spores        