I don't know that we know enough to know that. It's certainly true that there are "natural" VOC's that can be harmful, and man-made VOC's that are not known to

I don't know that we know enough to know that. It's certainly true that there are "natural" VOC's that can be harmful, and man-made VOC's that are not known to be harmful. I wouldn't necessarily presume that sensitivity is directly correlated to harm.