[1] : The Collaborative International Dictionary of English v.0.48

smell \smell\ sme^l, v. t. imp.  p. p. smelled, smelt;
   p. pr.  vb. n. smelling. oe. smellen, smillen, smullen;
   cf. lg. smellen, smelen, sm"olen, schmelen, to smoke, to
   reek, d. smeulen to smolder, and e. smolder. cf. smell, n.
   1. to perceive by the olfactory nerves, or organs of smell;
      to have a sensation of, excited through the nasal organs
      when affected by the appropriate materials or qualities;
      to obtain the scent of; as, to smell a rose; to smell
      perfumes.
      1913 webster

   2. to detect or perceive, as if by the sense of smell; to
      scent out; -- often with out. "i smell a device." --shak.
      1913 webster

            can you smell him out by that?        --shak.
      1913 webster

   3. to give heed to. obs.
      1913 webster

            from that time forward i began to smellthe word of
            god, and forsook the school doctors.  --latimer.
      1913 webster

   to smell a rat, to have a sense of something wrong, not
      clearly evident; to have reason for suspicion. colloq.
      

   to smell out, to find out by sagacity. colloq.
      1913 webster
see also:
smelled smelt smelling smell to smell a rat to smell out 

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