I know that this is a funny title, but it's the first one I thought of when I found the quote below.
Smells are surer than sounds and sights to make heartstrings crack.
I still remember the scent of the perfume that I was wearing when G and I met. It was called White Shoulders and I'm not even sure if still even exists! But every once in a while the scent will drift past me, so someone must still have a bottle!