a) Do you honestly think companies would do this?
b) The same silly "risk" applies to most any manufacturer - having a "regulation" in no way guarantees your cereal manufacturer isn't putting poison in your cereal, because why wouldn't he, right? (To use similar logic).
> The results of one FDA review of 18 different e-cigarette cartridges found toxic and carcinogenic chemicals in some but not others.
And the source manufacturer (country) of these? Zero details, as usual. Shall we stop selling infant formula in the US because infant formula contains melamine which can and does kill people? https://en.wikipedia.org/wiki/2008_Chinese_milk_scandal
If these agencies weren't deliberately so opaque, I'd perhaps be less distrustful.
Perfectly fair final point on inhalation of flavors, and good luck finding anyone in the industry that is opposed to further testing. Everyone very much wants a safe product.