Grover couldn't smell anything because they were not monsters but machines
There are no dangers there.
If you meen olive and pepper animal surgeons, yes they have one older brother
why love love ? because everyone needs someone or something too love . thats why so many people are eager too find it . its amazing everyone is seeker of it too . some people say . idont need olove but in reality they are the ones who want it the most . <3