The line of defense that is his immune system exhibiting is that of "first line of defense." There are only 3 lines of defense in the immune system. The first line of defense are a combination of physical and chemical barriers that prevent all types of foreign agents from penetrating the outer layer of the body. In this case, it is the nasal cavity.
as far as i can tell, yes. If you are hallucinating and really losing it, your senses are all tripping, so you can taste hallucinations. Under the influence of drugs, such as LSD, you can taste color, Hallucinations are not limited to sight and sound.
