I just got a young female rat, I am not sure of her exact age, but I would guess around 4-5 months. I woke up this morning and her cage smelled strongly when I opened it, almost like a sweet musty smell. She was with a male younger than her over night who was fed off this morning, is there some smell secreted from them breeding? I know this is gross, I was just wondering if it is normal or if I should be worried.