Some Hormones in the human body work in parts per billion. Parts per million can disrupt the endocrine system... Im not saying the aforementioned compound is dangerous. Although, unless you are intricately familiar with its interactions with the human body...to say that because it's only 1ppm it's of no health concern is foolish.
Bless Up!
FE
I never made such a claim.
To say or imply that PEG is dangerous at 1ppm without providing any information beyond opinion is commonly known as spreading FUD.
I merely stated it is probably less toxic than breathing air (particularly in an urban setting), a reasonable assumption.