I love the smell of a laundromat. There’s one near my work with doors on each end and I often walk through it on my lunch break just to enjoy the smell.
Also Oregon and Hawaii, both smell sweet and clean and happy.
fun by association. I find myself sniffing the drain cup before discarding the gas.
I like the smell of fresh tar. Not only do I like the smell but it makes me feel like there’s progress going on around me.
Gas.
Nail polish remover.
Magic Markers.
And, the pavement after a rain.
Whenever I smell burning rubber or plastic, I want to take a whiff of it even though you’re not supposed to do that because it’s toxic.
The first time I step out of the Russell Sq Tube Station in London every time I go up there – there’s something about the suddenly rush of melange of all the city’s smells that makes me feel happy and excited.
Gasoline and burnt matches/gunpowder, this must be a universal love.
Mimeographs! (Smells like almonds!)
Permanent markers, like those big ass Magnum 44s.
The smells of an Arts and Crafts store, like Michaels. (and in my years of yore, Frank’s Nursery and Crafts).
Ozone.
Pencils.
Loamy soil.
Flonase (Ironically, it smells like flowers or pollen).
Tylenol, lemme explain: When I take Acetaminophen, honest to god, after about 15 minutes I can “smell” an odd metallicy-salty-like smell. It’s weird, impossible to describe, and kind of pleasant.
And, of course, that New Car Smell™.
I also love gasoline. But I think my favorite weird smell is that plasticky odor from freshly-opened inflatable pool toys. It takes me right back to childhood, blowing up a raft or ring before going for a swim.
Printer’s ink, typewash, white gasoline, hand cleaner-
Reminds me of my dad
Gasoline, scorched metal and oil; it reminds me of my father.
Burnt insulation and ozone; reminds me of the electric gadget kits and model train sets i played with as a kid.
Okay, I was going to get it done, you don’t have to be so bossy.
Sawdust.
Ozone. (It’s the only pleasurable thing about a power supply blowing. That wonderful smell.)
Scotch tape around Christmas season. I swear they add something to the tape during that time of the year that completely changes the smell of it. If I could get that smell in air fresheners and incense, my house would smell that way all year round.
The smell of red hot metal.
Horses.
And an especially great smell is that of a well-used horse barn: a combination of horses, hay, feed, wood, and leather. Yum!
Better yet, a (well kept) horse barn on a rainy day 
My favorite smell in the world is itty bitty kittens, before they’re walking, it changes once they’re really up and about. Sadly*, not a smell I get to experience very often. Better even than puppy breath
*Sadly for me that is, 'cuz I love it. But not enough to add to the cat overpopulation.
CigarsAreEvil. 
I like the smell of printer toner.
New construction. I like the smell of the dust.
My dad was a contractor and took me around with him to job sites. I was the youngest of five, and those were the only times in my memory that I had him all to myself.
(Wow, this is an OLD zombie.)
-Gasoline
-White-out
-Permanent markers
-Bleach
-Old books
-The smell in the hallways of some apartments
-Skunk, from far away
-Wood smoke
-Slightly dirty clothes
This. Exactly this. Every Saturday when I walk into the horse rescue I volunteer at, I stop, just inside the door, and I inhale deeply. It is what Heaven must smell like, if there is such a place.
Maybe the person who resurrected it LIKES the smell of old zombies?
Mimeo paper (hard to find it around much anymore), gasoline, vanilla, old paperbacks. Mmmmmm.