Who decided that pine = clean

Am I unaware of some natural predilection of pine trees to clear up after themselves? Is it perhaps some ancient tradition that before we had the chemical means to remedy bad smells, readily available pine leaves/sap/bark was used to reduce odours? I have never actually smelt a pine tree specifically, but I'm pretty sure I have never smelt anything like pine scented air freshener or toilet cleaner whilst wandering through the woods, so I can only assume that the smell we now call 'pine' is an extrapolation on the smell of some part of a tree rather than an accurate representation of the natural smell of pine.

I wonder if the other trees are aware that, by virtue of their exclusion from the world of cleansing products, they all fail to measure up to the sweet aroma of pine. Do they all feel hard done-by? Do pine trees get together and make fun of oaks because nobody wants their toilet to smell like an oak tree? Maybe Christmas trees and pine trees get together to enjoy their privileged status of being exalted by the human race either as decoration or nasal adornment. Perhaps they are shunned by other trees for aiding and abetting man despite his noted antagonism towards their fellow trees, which would be a shame seeing as Christmas trees never seem to survive the optimistic new year 'planting in the garden' and pine trees presumably don't even get near the reproduced smell that bears their name, let alone any royalties or even preferential treatment on the back of it.

Having thought about this for way too long, I am now considering a time consuming and ultimately pointless project to reveal the origins of pine scented products, so I can only hope that something else crops up to distract me before I end up wasting my time and boring other people rigid with my tales from the pine project.