Air quality sampling indicates they had dissipated if I understand correctly.
You do not. Even weeks after people were kicked out of the temporary accommodations and told to go back to their homes the smell of chlorine was omnipresent across the town. What congressman Johnson claimed at the townhall was that the levels were safe which appears to be based on acute rather than long-term exposure data.
If long-term exposure to chlorine smell was a problem, wouldn't every pool lifeguard have a lawsuit in their back pockets?
What concentration is the chlorine relative to the air around a pool? Is Chlorine the only chemical present?