weedtime

I'm not in the US, but my city smelled like weed before it was legal and it smells like weed now too lol.

Like frosty said, some places make rules that you can't smoke in public. But even without that, people are generally discrete. I (dry flower) vape in public, generally when out for walks. I imagine it's the same etiquette that is expected of cigarette smokers: don't blow smoke in people's faces, don't smoke in crowded areas like bus shelters (not allowed anyways), don't litter, etc.

I don't think the culture is any different, it is treated much like alcohol. Legal but people will look down on you for being obnoxious about it in public. There was a brief period in Washington where it was legal but dispensaries were not allowed to sell to the public yet. Dealers on every corner in downtown Seattle asking every person if they want to buy some weed, and many buying out in the open. A 'co-op' that would deliver to you in exchange for a donation. Those were fun and interesting times but now I'd say the only difference is no one worries about the smell when they want to get high, and of course the lessened paranoia.

The only time I've ever seen anyone 'toking out in the open' aside from the random unhoused person here and there is when I was in San Francisco and there were four very old men sitting at a picnic table by the bay passing a joint around.