when a guy notices your perfume

Well, it usually means that he's attracted to her, or at the very least, he finds her scent appealing. Scent is quite a powerful tool, it has a way of creating lasting memories and associations.

It could be, yes. When a man notices your perfume it likely means he's paying close attention to you, and that’s generally a good sign. But remember, it's always important not to read too much into these things; it's best to look at his overall behavior.

It might mean he particularly likes the scent. But it's also a way to start a conversation or to get your attention. A compliment is always a good thing.

You're welcome always. Remember, just be genuine and comfortable, that's the key.