As previously mentioned, the DOT did measure for a couple of other things that were known, or suspected to impact on human health. Carbon dioxide, for one,, plus ozone, funguses and various kinds of germs. Both smokers and nonsmokers. Nevertheless, carbon dioxide is a definite form of pollution and a definite cause of symptoms, and a tracer for stale air. At least estimated risk.
Risk varies with destination.
These are mathematical gizmos in a mathematical game with truly breathtaking permutations. That s the very first item on DOT s list. And even in the smoking section, the levels were under 2. Further, DOT adds, the evidence for acute respiratory and ocular irritation of ETS on the nonsensitive adult has been reported as equivocal and not scientifically conclusive. The evidence of ETS as an etiologic agent for childhood asthma is equivocal, DOT says.