Assertion: formaldehyde's odor | /r/Causes | chemical
Facets:
Source sentences:
text: EPA has reviewed the evidence on ozone generators and states: “available scientific evidence shows that at concentrations that do not exceed public health standards, ozone has little potential to remove indoor air contaminants,” and “there is evidence to show that at concentrations that do not exceed public health standards, ozone is not effective at removing many odor causing chemicals” .