Filters catch particulates, but not gases. Heated ABS releases chemicals like 1,3-Butadiene, a small molecule (4 carbons), gaseous at room temperature, and mild

Filters catch particulates, but not gases. Heated ABS releases chemicals like 1,3-Butadiene, a small molecule (4 carbons), gaseous at room temperature, and mildly gasoline-smelling. It's bad for you in high concentrations.