I hate that ozone smell some people have mentioned it. The printers/copiers in my office produce it, and to me it just smells like it’s giving me nose cancer.
What I came to say. Most any diesel exhaust makes my mind travel back to some sea travel I did around the Med when I was young. The stench of large naval vessels transports me to both home and to a dozen other ports at the same time
I like that smell too.
Anybody besides me like the smell of pool chlorine?
Not in the pool itself so much as the smell it leaves on skin afterwards. I do like that.
Crayons. A new box of crayons.
(Bolding mine.)
"…and he liked epoxies. Not all the epoxies, mind you. But he had his favorites.
My entry:
The smell of jet exhaust when you arrive at the terminal, on your way to somewhere exciting or exotic.
I like the smell of glue sticks. Not that I’m a glue-sniffer or anything. Besides, I think glue sticks are pretty safe (even if not too useful for most gluing jobs.)
Someone mentioned burning rubber. Has anyone mentioned fresh rubber in the form of tire store essence?
Precisely.
There is a very narrow threshold to chlorine and bleach that goes from some form of pleasent to OMG MY SINUSES ARE DYING!!
But at the pool or on swimmers it is a good smell.
Great one! That’s definitely sentimental for me too. Likewise with construction paper and Elmer’s glue.
Okay, that one made me LOL.
Bingo. Walking into the storefront of a tire shop is like new car smell times a billion. I love the smell of a lot of mechanic garages too.
This is strange…but I love walking into a pet store. The smell of dry pet foods! I’m a painter and I really love the smell of turpentine. Winsor Newton English Distilled Turpentine—is the best.
I think it’s kind of a baby aspirin smell. New work gloves sometimes have that smell, too.
I used to love the smell of leaded gas exhaust - mmm mmm good.
I don’t care for any permanent marker smells except for Jiffy markers - sooooo delicious. I always joke that you can tell when I’ve been sniffing them by the black rings around my nostrils. 
My cat is a huge fan of plastic bags and old books.
Beach balls. Can also get a whiff with new shower curtain liners.
I like the smell of Play-Doh too.
I like the plastic smell of pool toys too, reminds me of child hood. We had a pool growing up, lots of fun summers.
Bicycle shops smell like that too. New rubber and a hint of lubricant. Lovely…
A few people have mentioned leaded gasoline/petrol. I remember sometimes when I was a kid, exhaust fumes sometimes had this kind of sweet, almost almondy smell which I really liked, but you don’t seem to get it these days. Was that the lead fumes?
Hate anything greasy or petrol. I’d say:
bubblegum
car wax
burning rubber after a moto ryde
the paintstripper stuff they use on old doors
ylang lang (spell)
I can’t describe the difference between leaded gas smell and unleaded, but it was indeed delicious. And totally not something we should have been whiffing. 
Oh, I thought of another one - the smell of dirt. Working in the dirt means spring and getting your garden ready to plant and being outside and the sun warming up and the world coming back to life again.
The smell of a freshly opened vinyl LP. Rare to open sealed ones these days, but they still have that wonderful smell, sort of a musty cardboard with plastic smell. My wife has caught me wiffing old LPs before.
Leaded gasoline
Vo-Ban
Ditto’d papers
Ethyl ether
Freshly sharpened wooden pencils
Fabulous scents!