Fans of the Animorphs

Sometimes your worst problems are the ones you can't actually see. Like the Helmacrons. These less-than-an-inch-high aliens are back and they want the morphing cube more than ever. Obviously Rachel, the other Animorphs and Ax can't let them take the cube. But when Rachel tries to stop the Helmacrons from stealing it, Marco gets in the way and ends up with tiny aliens, well, up his nose.
Rachel and the others can't let the Helmacrons stay inside Marco's head. They're armed and could cause serious damage. So the Animorphs and Ax come up with a plan to evict the Helmacrons from their new residence. But it involves a shrinking ray and the obvious: Marco's nose.

This seriously feels like another "we ran our of ideas" plot filler book. Not to mention questions it raises like "how could they breathe when small if the air molecules are probably bigger than their bodies are used to handling? And why didn't Marco's immune system fight THEM off? Oh and "How could they see anything at all when it's dark in there?"

Bonus points for mentioning Magic School Bus and Fantastic Voyage though *g*

Prompt: Going inside

I can't really come up with any really good questions about this one...except for "why didn't Marco ever get his rabies shot?" maybe.

While I'm at it, anyone know why many of the later books refer to Elfangor as a war prince instead of a prince like the early ones?

Edit: I got next week wrong, next week is Taxxon time. My bad.