I was one of the heads of a Hazmat team for many years. The thing this type of article seems to forget is that quantity and dosage are the most important factors in any hazard assessment. Many substances and compounds that will kill you in large amounts are beneficial for you in small amounts. The amount of smoke coming from toasters not set to burn your toast not in a very small enclosed space probably has little if any risk involved.
Exactly. There is no such thing as a toxic substance or particle. What’s the LD rating or ppm/ppb/ppt? Most people tend to think of substances like formaldehyde as being toxic to humans. The same people usually don’t understand that humans produce about 1.5 ounces of formaldehyde daily. Formaldehyde also exists in the kitchen cabinets I just installed. The key to determining toxicity is accurately identifying a lethal dose.