Sheldon Whitehouse actually said...

"So a vulnerable person who goes out on a bad air day and experiences no apparent, immediate ill effects, doesn't feel shortness of breath, doesn't cough, doesn't in any way have a present sense during..."

"And so the American Thoracic Society, in your view, is also reputable and reliable when it makes a recommendation like this on a matter with its expertise?"

"the existing standard, the previous standard, the 75 parts per billion standard, was criticized at the time that it was adopted by the Clean Air Scientific Advisory Committee"

"The revised standard is a significant improvement."