. >> 48-year-old carrie markham said she spent three years struggling to breathe, starting with lungblems that began in 2020 and puzzled her doctor. >> they just kept saying we don't know. some type of inflammatory condition. >> reporter: the registered nurse and mother of three says she had been using a philips dreamstation to treat her sleep apnea. in june of 2021 she saw on facebook that machines like hers had been recalled due to sound abasement foam used inside that could degrade. philips said said potential risks included possible carcinogenic effects, asthma and inflammatory response. >> i was flabbergasted. >> reporter: at that point, you hadn't gotten any notification? >> absolutely not. >> reporter: markham is now one of many users suing philips, saying the company had been told about foam degradation inside solve some of its ventilators but did not initiate a recall until 2021. two years later some patients on social media complain they still have not gotten a replacement machine from philips. >> i think this recall shows us how bad things can go when we don't get it right

. >> reporter: 48-year-old carrie markham says she spent three years struggling to breathe, sufferingan in march of 2020 and puzzled her doctors. >> they just kept saying, we just don't know. some type of inflammatory condition. >> reporter: the registered nurse and mother of three said she had been using a phillips dream station cpap machine to treat her sleep apnea since 2018. then, in june of 2021, she says, she saw on facebook that machines like hers had been recalled due to sound abatement phone used inside that could degrade. philips recall said person a genic effects, inflammatory response periods >> i was flabbergasted. >> reporter: you hadn't gotten any notification? spiel actually not. >> reporter: markham is one of consumers, the suing phillips. began in 2015. according to the food and drug administration, did not initiate a recall until 2021. two years later, some patients on social media complained they still had not gotten a replacement machine from philips. >> i think this recall shows us how bad things can go when we don't get it right. >> reporter: dr. vinay rathi stu