Depends on how you define air filter. I think you have to have one that can capture VCOs, which puts you into expensive, but still considered normal consumer (

Depends on how you define air filter. I think you have to have one that can capture VCOs, which puts you into expensive, but still considered normal consumer (as opposed to professional/enterprise/commercial/etc), products. So, I'd suggest offhand to look at IQAir and Austin Air products to see if any of them state they can grab OPFRs. Their bottom level products probably won't.