balmy (adj.) Look up balmy at Dictionary.com
c.1500, "delicately fragrant," from balm + -y (2). Figurative use for "soothing" dates from c.1600; of breezes, air, etc. "mild, fragrant" (combining both earlier senses) it is first attested 1704. Meaning "weak-minded, idiotic," 1851, is from London slang.