I believe the answer is ginger root!
You can't see them without a microscope, nor can you smell or taste them individually.
Hello,
The answer is "smoke abuse".
Reason:
<span>Sinusitis, bronchitis, and asthma are all caused by smoking which could also caused cancer with could also cause death. Therefore the answer is smoke abuse because of all of the diseases.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit</span>
