Well don't go within 10km of a road then. Brake disks are full of it, and pads have much worse. Then there's all the ground up rubber, bitumen and glass. If any

Well don't go within 10km of a road then. Brake disks are full of it, and pads have much worse. Then there's all the ground up rubber, bitumen and glass. If anything the filtered outlet vent of a recycling facility would reduce this.