Marin County emergency responders were called to the Novato Monday  after 7 people were sickened by noxious fumes.

KCBS Radio’s Bob Butler says firefighters determined they had been exposed to carbon monoxide

<p>Marin County emergency responders were called to the Novato Monday &nbsp;after 7 people were sickened by noxious fumes.<br><br>KCBS Radio&rsquo;s Bob Butler says firefighters determined they had been exposed to carbon monoxide</p>

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