I am not aware of a consumer sensor that measures this accurately enough, but I'm also curious what is available. I tested my home using a badge from this comp

I am not aware of a consumer sensor that measures this accurately enough, but I'm also curious what is available. I tested my home using a badge from this company: https://acsbadge.com/ https://acsbadge.com/ They are not cheap ($60 for one test), but it's accurate to 2 ppb and will give you an idea what your chronic home exposure is and if changes are needed.