Source : Webster's Revised Unabridged Dictionary (1913)

Exhale \Ex*hale"\, v. i.
   To rise or be given off, as vapor; to pass off, or vanish.

         Their inspiration exhaled in elegies.    --Prescott.

Exhale \Ex*hale"\, v. t. [imp. & p. p. {Exaled}, p. pr. & vb.
   n.. {Exaling}.] [L. exhalare; ex out + halare to breathe;
   cf.F. exhaler. Cf. {Inhale}.]
   1. To breathe out. Hence: To emit, as vapor; to send out, as
      an odor; to evaporate; as, the earth exhales vapor;
      marshes exhale noxious effluvia.

            Less fragrant scents the unfolding rose exhales.
                                                  --Pope.

   2. To draw out; to cause to be emitted in vapor; as, the sum
      exhales the moisture of the earth.

Source : WordNet®

exhale
     v 1: expel air; "Exhale when you lift the weight" [syn: {expire},
           {breathe out}] [ant: {inhale}]
     2: give out (breath or an odor); "The chimney exhales a thick
        smoke" [syn: {give forth}, {emanate}]