What does love is a smoke bad made with the fume of sighs mean?

The phrase "love is a smoke made with the fume of sighs" suggests that love is ephemeral and intangible, much like smoke that dissipates easily. The "fume of sighs" implies that love is intertwined with longing and emotional pain, as sighs often express feelings of desire or sorrow. Overall, it conveys the idea that love is both beautiful and elusive, filled with complexities that can evoke deep emotions.