I just love the smell of freshly cut grass.
I love to just go to my parents or my grandma's house in the fall and smell the harvest.
Not so good smell - My grandma's sister died of breast cancer and her other sister took care of her after chemo and when she would get sick my aunt said it smelled like muskmelon/cantelope and she couldn't eat it ever again. I didn't like it before then and now every time I smell it that is what I think of so I can't eat it either!