The Collaborative International Dictionary of English v.0.48:

Smittle \Smit"tle\ (-t'l), v. t. [Freq. fr. OE. smitten to
   befoul. See Smite, v. t.]
   To infect. [Prov. Eng.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Smittle \Smit"tle\, n.
   Infection. [Pov. Eng.] --Wright.
   [1913 Webster] Smittle

The Collaborative International Dictionary of English v.0.48:

Smittle \Smit"tle\ (sm[i^]t"t'l), Smittlish \Smit"tlish\
   (-tl[i^]sh), a.
   Infectious; catching. [Scot. & Prov. Eng.] --H. Kingsley.
   [1913 Webster]