If your doctor is clueless about inline filters here's the link

[https://www.philips.com/c-dam/b2bhc/master/landing-pages/src/update/documents/philips-recall-clinical-information-for-physicians-and-providers.pdf](https://www.philips.com/c-dam/b2bhc/master/landing-pages/src/update/documents/philips-recall-clinical-information-for-physicians-and-providers.pdf)

​

On the top of page three it says

° If physicians determine that a patient must continue using this device, use of an inline bacterial filter is recommended per Instructions for Use; it may reduce exposure to degraded sound abatement foam particles, though bacterial filters will not reduce exposure to potential Volatile Organic Compounds (VOCs). Consult your Instructions for Use for guidance on installation.

​

My mom's pulmonologist told her she's never heard of inline filters and that if she uses one it'll void the warranty on her bipap. I'm not even surprised, this disaster just keeps on going.