I've always loved the smell of wood smoke, probably a LITTLE too much.
True story: When I was a little boy, probably younger than 8, I used to make fires all the time outside my grandparents house in a firepit. I always had my head in the smoke and I guess I was always breathing it in. I loved that smell so much and I liked getting close to the fire to see what was really going on.
Somewhere in this time period, I started wheezing at night and coughing and mom took me to the doctors. Doctor said I was developing adolescent asthma or something like it. Mom spoke up and told him about the fires and how close I always as to them. Needless to say, they gave me an inhaler and a line was drawn around the firepit that I was not allowed to cross.
Asthma went away over time thankfully, but the love of fire did not.