-Nail polish
-Books (new or old)
-CVS unscented handcream (it has a nice, clean smell)
-Suave Baby Powder hand cream
-Clean sheets right out of the dryer, when they’re all nice and warm
-My cats’ fur (they’re indoor cats, and they always smell nice – NOT like the litterbox)
-Coffee
-Libraries
-My mint shampoo
One of the nicest things I ever smelled was upon returning from courting the future Mrs. Plant in New England.
Off the plane in Arkansas, outside the airport the smell of pine trees. I never noticed it before; it was good to be home, however pleasant the trip had been.
Freshly cut grass or hay. Fresh peas.
Quoth Cat Whisperer:
Likewise-- It’s a smell I always associate with my mom, who does a ton of gardening. It’s a shame the plants are poisonous; they’d make a wonderful herb (in addition to the wonderful fruit, of course).
Another couple that I associate with relatives:
Apple cider vinegar. My maternal grandmother, an excellent cook, uses it in everything. Occasionally I’ll open up a bottle just so it smells like Gramma’s kitchen.
Hot electrical wiring. My paternal grandfather was always fiddling with electric things, and had a great train set in the basement. There was this distinctive smell whenever it was running. I think that smell is about the only thing I remember about him, any more.
I have some Messe de Minuit perfume that smells exactly like a musty old book. ( And there are several other book-related scents out there that you can buy - ‘Paperback’ and ‘In the Library’.)
I like:
- the smell of a freshly sharpened pencil
- rubber bands
- new car tires
- motor oil, in the garage - and gasoline
- the NYS Fair
Tar
Old Books
Black Licorice
Cloves
Freshly Fried carnival food.
Napalm, especially in the morning 
Can’t believe no-one has said this already.
Napa… FUCK!!
The smell of campfire. I will never not love that smell unless the smoke is coming directly at me.
Jasmine flowers , Coffee plants early in the morning !
freshly cut grass
caramel corn
coffee
walking into a bakery
chocolate chip cookies
new car smell
gasoline
french fries
nail salons
bacon
fresh rain on pavement
Horses.
Honeysuckle.
Leather.
Lilacs.
Wood smoke.
Bacon.
Some of the older buildings in Bangkok have this particular musty odor that I identify purely with Bangkok. I call it “Early Brothel.” The cinema room at the Alliance Francaise here is a prime example. So are many of the government buildings. The only time I’ve ever smelled it anywhere else was this one hotel I stayed at in Beijing in 2001; it really reminded me of Bangkok. Dunno if it’s a certain type of cleaning fluid or what.
Skunk. To me, it smells like a combination of garlic, freshly ground coffee beans, and soil. I also like the smell of each of those individually.
Also cinnamon, cedar, and lots of things already mentioned.
And walking through the streets of Albuquerque and Santa Fe in the first nip of autumn and smelling the pinon smoke from chimneys.
And the first lungful of Hawaii when you get off the plane.
Diesel exhaust. Reminds me of travel.
- The smell of the subway. They smell the same pretty much everywhere, but they all remind me of the one in Prague.
- coffee
- old books
There’s a woodstain that smells simultaneously like candy, a well-cooked steak, and some horrid chemical that will kill you. Last year I was working in a theatre that was using it, focusing a light with my face four inches from a stained piece of wood. I didn’t know whether to lick it or vomit.
Old books and used bookstores. Stew stewing. Freshly washed shirts. Girls’* hair, especially when they use some kind of a lavender shampoo. Barbecue. Tire stores.
*Was that a good use of an apostrophe? Felt wrong, somehow.
Toast always smells great, way better than it ever tastes.
Bread baking in my oven. Mmmm.
Peanut Butter.
Gasoline/Paint Thinner/Model Glue/Axle Grease
Coffee
New Car interiors
Fresh rain on hot pavement
Sharpie Markers
Pipe Tobacco
Fresh baked bread
A cooking turkey
The bouquet of many, many wines
Listerine
Wet dog
Cigar boxes
Pencil Lead
Caramel
Cooked Bacon
A campfire
That’s enough for now.