Smitch or smich?

[JF12]

My wife (who grew up in Yorkshire in the 1950s and 1960s) uses the word "smitch" (or possibly "smich") to describe the atmosphere in a kitchen resulting from burnt food. It describes the combination of two things: (1) the smell and (2) the smokiness which makes your eyes water. It is obviously a colloquial term. Has anyone else come across its use? Or can anyone suggest an alternative word?

[Quizmonster]

Smitch has been used in English - though now only in dialects - since the 9th cebtury! It can mean the smoke arising from smouldering material or just dirt/smut/dust.

[Solarjunkie]

Used in our household and pronounced "smeech" to specifically refer to the oily fumes from a paraffin stove with a wick that needs trimming.