The charcoal is packed into an IKEA garbage can around a prefilter made from a canister-style automotive air cleaner – [ZbLab] uses a Filtron filter that crosses to the more commonly available ...

then activated charcoal cab air filters might be a solution. A seed corn company in my area that sprays herbicides or pesticides all summer long had problems with its sprayer operators complaining ...

Charcoal: Primarily used to absorb cooking odors and other particles to recirculate air. While every microwave has its own filter, the location may be different depending on your model.