Being a old guy with some lung damage,tradie in the building game asbestos and mica plus dust enviroments,the smoke from roasting upsets my lungs. I use a gas filtering face mask but of late this is not enough.My roast station is a home made bench with the bean cooler,KKTO and raised table for my dmm, tablet,and sundry items.I have now added a 200mm commercial exhaust to extract the harmful gasses away from my roasting station so on with my favourite hobby