A faithful hint of citrus and coffee

Till very recently, even if I were to blindfold you and bring you to a house, you would immediately identify it as mine if you had been there earlier. You couldn't miss the mild hint of an orange citrus scent in the air. It was present in most rooms - the kitchen, the living room, my bedroom and even the bathrooms - but it was always strongest in my parents bedroom. That's where she went to sleep every night, after all.
Ruby, our pomeranian-fox-spaniel hybrid was born in this house in 1999. Sh...