will using a burning mosquito coil help fight contaminatio ?
No, most mosquito coils contain citronella as a volatile oil, and prallethrin/allethrin as the active chemical.
Prallethrin/allethrin are active only against invertebrates (mainly insecta). It wont help fight contamination because while growing most of the contamination you will face will be bacterial or fungal in nature.
The only use I could think of would be if you have a bug/flying insect problem, and these insects could come into contact with your growing casing/cake. In cases like this, insects can be vectors for both bacterial and fungal contaminants.
The coil might help some of these insect vectors stay away.
my 0.02 cents
India shroomer has said it all really.
Pokie, are we to assume you have contamination problems?
thinking about burning mosquito coils!
it sounds like you are either just inquisitive/overcautious or you are really having a hard time with contamination. :(