The Collaborative International Dictionary of English v.0.48:

Exhale \Ex*hale"\ ([e^]ks*h[=a]l" or [e^]gz*[=a]l"), 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.
      [1913 Webster]

            Less fragrant scents the unfolding rose exhales.
                                                  --Pope.
      [1913 Webster]

   2. To draw out; to cause to be emitted in vapor; as, the sun
      exhales the moisture of the earth.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Exhale \Ex*hale"\, v. i.
   To rise or be given off, as vapor; to pass off, or vanish.
   [1913 Webster]

         Their inspiration exhaled in elegies.    --Prescott.
   [1913 Webster]

WordNet (r) 3.0 (2006):

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