I've heard that about boys. My daughter's fifth grade teacher said for some reason, they seem to be particularly ripe in the fifth and sixth grades.

After that it's all the smell of AXE body spray and such. Have you tried walking into a teen girl's room who loves the smell of Hollister body spray? Between that, the nail polish, nail polish remover, hand creams, deoderants, etc. it can be quite a shock to the system.