How does bud describe miss thomas humming?

In "Bud, Not Buddy" by Christopher Paul Curtis, Bud describes Miss Thomas's humming as a soothing and comforting sound that fills the air with warmth. Her humming evokes a sense of peace and happiness for Bud, as it reminds him of love and care. It reflects her nurturing personality and adds to the overall atmosphere of safety and belonging that Bud craves.