The manufacturer was contacted in reference to the voluntary field safety notice related to the sound abatement foam in certain cpap, bipap, and mechanical ventilator devices.The manufacturer received information alleging smell of smoke, burning sensation and filters were turning black.There is no allegation of serious or permanent harm or injury.No medical intervention was specified by the patient.The device has not yet been returned to the manufacturer for investigation.The manufacturer's investigation is ongoing.A follow-up report will be submitted when the manufacturer's investigation is complete.
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