Neblina translates to "mist" or "fog". It's a more evocative and less common word than simply saying "cloud" or "haze", adding a touch of atmosphere to the lyrics.
In the song, the line "Junto com a neblina, dose de Buchanan's" (Along with the mist, a dose of Buchanan's) paints a picture of a specific, perhaps intimate or reflective, setting. The mist contributes to a mood that could be mysterious, melancholic, or simply quiet, setting the scene for the emotional conversation the singer wants to have.
This song is all about a relationship that's been through some rough patches, but now everything's changed for the better. The artist is tired of fighting "por coisas sem sentido" [over meaningless things] and says, "Essa desconfiança vai acabar comigo" [This distrust is going to destroy me]. He wants to stop playing games and just talk things through.
Then, the mood shifts completely! He talks about "neblina, dose de Buchanan's" [fog, a shot of Buchanan's] and how only her scent stays in his bed. He's totally captivated by this "loira gostosa" [hot blonde], getting lost in her curves while trying to find answers. The core message is clear: "Tudo mudou / Quando você chegou" [Everything changed / When you arrived]. He's so sure she's the one, asking, "Se não sou eu quem vai te fazer feliz?" [If it's not me, who will make you happy?]. He even tells her she's beautiful "Mesmo sem maquiagem" [Even without makeup], emphasizing that their journey is far from over. It's a sweet, honest look at how one person can completely transform your world.