I remember liking the smell of diesel exhaust as a kid but now, at least here in Japan which may have different emissions, it makes me feel like I can't breathe.

Petrichor is fantastic as is the smell of the ocean. Cow manure is super nostalgic to me. I was driving my motorcycle to do some paperwork in the city and smelled them putting it on the fields. An ocean away, but still felt like my childhood home.

Cilantro/coriander leaf (and whatever thing in my property smells oddly like it when I cut grass/weeds) is like bug spray to me. Can't stand the smell. A tiny bit in something doesn't put me off, but it quickly gets unbearable and chemically to me.

I can‘t stand the smell of coffee roasting since childhood… hated it when one of my employer moved office next to a coffee rostery

isopropyl alcohol smells amazing

I agree with you on gasoline. I also enjoy the smell of the blue liquid you put in your car and then spray on the windshield (I don't know what it's called).

Popcorn. I hate the smell of popcorn. It permeates everything and takes so long to go away.

Interestingly, I do not dislike eating popcorn. Just the smell.

I like the smell of skunk.

I hate the smell of coffee, as well as the powder/beans.

I like the smell of other people. We work so hard to scrub ourselves clean, but I like to smell of people, even sweaty. I ask my spouse not to shower too often, lol. (Not trying to ask them to be super stinky... just a little favor.) I sneak a little smell every time I hug my kids.

IDK if this is popular or not, but I never hear anyone talk about it, so *shrug*

Geraniums

Asafetida. People call it horrible unless cooked but imho it just smells like garlic++. It's sulfurous, but so is garlic and a lot of food really. Sulfur isn't necessarily an unpleasant smell to me. As far as I can tell the smell of asafetida doesn't change when cooking, it just gets milder.

Healthy compost also smells kinda nice, rotting meat is awful but if you're not getting putricene and co from anerobic nitrogen decomp decay mostly smells damp and warm and spicy.

Durian also smells amazing, but that's a pretty popular opinion given the wild popularity of the fruit. Potentially more sulfur not aversive stuff there.

In the hate camp peanut butter. It is overpowering and early in the day makes me throw up. My wife adds it to coffee sometimes which makes the entire house smell of peanut butter for hours. It's a very powerful and cloying smell.

I generally feel like my sense of smell is quite bad. There's not really a lot of smells that I hate abnormally, probably due to the reduced sense of smell. I do like gasoline smell just like you, but honestly I thought that that was normal.

Banana

I like the faint smell of cigarettes from a distance.

Tea tree smells like mouldy mint to me.

I grew up in a post-Soviet European suburb where almost everyone kept some kind of farm animal. The smell of chicken manure gives me the good kind of nostalgia.

On the negative side, both the smell and taste of strawberries is offensively generic.

I love the smell of basements. The humidity and the green, decades old moss on the wall gives off this refreshing yet mature scent. As a plus, it's also often cooler than the air at ground level. Mmmm.

A bagel covered in cheese and toasted is a heinous smell. I love cheese and I love bagels but for some reason it makes me gag.

I dislike the smell of Fenugreek in people.

In food, it's fine. But if you cook with it, it lingers on your clothes. And that bothers me.

I also like the smell of gasoline and bleach, most likely from the association with riding dirt bikes and swimming as a kid. Fuel for the bike and bleach to clean the tshirts before going for a swim in the public pool!

I love the smell of dittos, it's unlikely I'll ever smell that again. I also love the smell of garages.

I hate the smell of food after I've finished a meal. Every weekend I make protein blueberry pancakes. The house smells delicious until I'm done eating, and then it feels cloying.

I reaaallly hate the smell of other people, except my husband. I feel like I have an extra strong sense of smell, and I really hate the scalp smell some people have, especially during a humid summer. Nauseating! And forget about it if I can smell your feet through your shoes, I will definitely make some excuse and leave. And body odor, especially from people who don't use deodorant or shower every day. I know that's a personal choice and I should be tolerant but it's so overpowering, I really hate it.

Now that I think about it, I guess these aren't too uncommon after all.

In college, I worked at a little aerospace manufacturing place running an NC milling machine, and I really like the smell of the cutting oil/lubricant they spray on the rotating cutters. I now work in software engineering at a company that makes rocket engines, and I like walking through the shop and smelling that smell.

I've never liked oil diffusers of any kind. I feel like my throat is closing up

cut grass makes me feel nauseous