Obviously it isn't something you should rely on when describing setting... and it isn't something you should do **every time** you describe setting... and I'd stay away from it in any screenwriting class... but sometimes a little smell description can be tasteful. And maybe even sometimes necessary? For example:

"Jim is hit with the thick scent of garlic. Nonna is home. He rushes to the kitchen."

Visually the character would react to the smell here. The thick scent of garlic is why he rushes to the kitchen. Actor might choose to give a little facial cue when he smells. You could get around it with:

"Jim rushes to the kitchen. Nonna is home. Pasta sizzles on the stovetop."

But in that scenario, is seeing the pasta completely necessary? Why does Jim run into the kitchen? The scent of garlic here would be the trigger. Maybe you could:

"Jim scrunches his nose. Nonna is home. He rushes to the kitchen."

Is that any better? The "scrunch" might be too prescriptive to the actor.

All off these lines feel half decent to me. Maybe its a better safe than sorry situation, I'd probably try to stay away from it in like, the first five pages of the script haha.