If you don’t like wine, you’re not going to drink it enough to get to the point where you can understand those things. Also, since you like only sweet wines, you’re going to be focused on the sweetness, and not the other “notes”.
That sounds like something people who don’t know much about wine tell themselves so they can feel superior to folks who do like wine*. Yes, there are wine snob poseurs who have no idea what they are talking about, but there are also wine aficionados who do.
*Not saying you fall in that category, but I suspect most of the people you have “heard” that from do.
I was thinking about starting a thread about strange smells you find appealing. I thought of that while smelling fresh hot asphalt being poured. Maybe I should try that wine.
Or maybe a thread of “things that taste just like they smell”, like peanut butter.
There are many smells I enjoy. Most humans love the smell of freshly baked bread, or the smell of freshly ground coffee, even if they don’t like coffee the drink.
There are many man-made smells that I like a whiff of, freshly-laid asphalt being one. Or freshly cut grass in the Summer. A whiff of gasoline as I fill up the car. Sometimes even car exhaust, especially back in the day with leaded gas, smelled interesting.
I also like some smells of nature. I actually like a far off, faint wisp of skunk smell on a warm Summer night. Or the smell of the Earth, soil, dirt. Mulch has an interesting smell.