Yes...formaldehyde exposure is a big issue in the US. Not many know of it. I bought a new construction house, so it has new carpet, paint, cabinets, wood floori

Yes...formaldehyde exposure is a big issue in the US. Not many know of it. I bought a new construction house, so it has new carpet, paint, cabinets, wood flooring etc has an off gas effect. I honestly it's criminal to allow builders to build like this, or material to be manufactured like this. That "new car" smell, that smell when you open up new furniture made of plywood (the glue contains formaldehyde) . There are threshold laws in the US and Europe. There are laws from OSHA that regulate where you work - but no laws that regular where you sleep! It's all driven by money, of course...material with lower formaldehyde cost more to manufacture. Just walk into a Sherwin Williams and compare their paint. The highest ones are eco friendly "Low VOC" (volatile organic compound) - so industry definitely knows about it. The numbers in my house were effectively off the charts and OSHA would be closing down your employer if you had this exposure at work. Remediation for this is essentially allow to off gas, keep windows open. Off gassing also is impacted by humidity, so may be low during winter but high in the summer or when it rains. Air filter DOES NOT fix this. The amount of air moved by a HVAC is peanuts compared to just opening windows for a few minutes. California has regulations: https://ww2.arb.ca.gov/our-work/programs/composite-wood-products-program/about https://ww2.arb.ca.gov/our-work/programs/composite-wood-prod...