Well, the song doesn't explicitly say that there's a smell of formaldehye and aspestos, so it could just, like, be there in the comnposition of the walls. And I am definately no advanced bio student, but I smelled formaldehyde in high school (preserved pig heart, yuck). At my high school, at least, you had to dissect a frog in regular bio (I went to the library and colored in a frog-dissection packet, instead).