Fibreglass insulation? That stuff is Terrible for getting into small spots and itching like the devil. If that was the kind might well have been responsible for the goopy eye and the other itching. Weren't you itchy too?
For the tail, google up on Stud Tail and see what you think. The oiliness and the smell are typical. It's named for being most common in intact tomcats but happens in dogs too and both genders of both species and also in neutered as well. I know someone who swears cocoanut oil helped her dog over it. The GR next door had it and he has got his hair back as well, he just seemed to grow out of it but I know he was on treatment from his Vet too. Sorry, don't know what the treatment was.
Tail Gland Hyperplasia is the medical term.