I'm addicted to my own scent?

Ever since I was two or three years old, I would sniff my blanket. I think it started of as a habit for young children but as I grew, I realised that there was this smell that was always on the blanket that I really liked. It was a comforting feeling to just sniff my blanket and my mom would take my blanket out every month to get washed. After it was washed, it smelt like regular, sun-dried linen and I hated it! But after a week or so, the smell would start to come back until it get's stronger. People who smell it tell me that it smells like a newborn baby... like you know how babies always have that milky scent? Well I'm beginning to think that the blanket smells because my own body odour rubs onto it. Does that mean that I smell like a new born baby? I'm now 14 years old and I've broken my habits a few times and even managed to remain away from my blanket sniffing for up to an year but I would just get addicted again if I have a few whiffs of the smell. My mom says that it's bad for my health to sniff the blanket but I've got no problems so far. I was wondering, will this give me lung cancer? Also, why am I addicted to it?