I am a sniffer. this morning i was smelling tomatoes in the supermarket. Most people will smell flowers, but its also the leaves that smell.
Eucalyptus leaves smell of.. well eucalyptus except the Eucalyptus citriodora which smells of lemons. As do Lippia citriodora(lemon verbena) and of course lemon tree leaves, and lemon balm. Except if you compare them one after the other, they are all vaguely lemony, but also different. The leaves of Houttonia cordata chameleon smell of marmalade oranges.
Of course all the leaves used as herbs have scents, lavender, rosemary, thymes,sages.
Blackcurrant leaves have an intense scent when crushed and can be used to make a wonderful sorbet.
What do you like to sniff at?