Guest,
First IF you want to have a good dialog, use a real name.
Second, Poor air quality inside houses has been an ongoing source of discussion for a very long time. Mold, CO, CO2, excess moisture, radon, formaldehyde, emissions from common cleaning products, cooking meat over a high heat, smoking, pet dander, volatiles from paint, leakage from woodstoves, flatulence, are all problematic and sources of indoor pollution.
Third, proper mechanical ventilation in conjunction with good building practices produces a healthy home as long as the air outside is reasonable by dilution of indoor contaminants.
Yes I trust mechanical ventilation. I trust my heating system also. I use an ERV set to a baseline of 0.35 ACH, plus point exhaust fans in the bathroom (on a timer with a 30 minute run time setting), and Kitchen range fan. I also believe in using products (whenever practical) that don’t contain VOC’s, using a sealed combustion boiler for heating, etc. I always wash new sheets blankets, etc several times in hot water to decrease the levels of fire retardants in them for the same reason.
Simply making blanket statements like EPS off gasses at elevated temperatures and well air sealed homes are problems paints a very superficial picture.
Thymol is a dangerous substance. When you use it in the lab, you need to take reasonable protective measures. Makes a lot of sense that it is banned from all food products right? Except for the fact that it is the active ingredient in mouthwash like Listerine. Every time you eat food that uses thyme for seasoning, you are ingesting it. Are we all going to get sick from eating thyme and rosemary seasoned chicken? No. If I took a good swig of a bottle of concentrated thymol, I would be a very sick dude though. Get the difference?
Cheers,
Eric