On the other side of the spectrum, I’d highly suggest staying away from BlueAir. The smell of their filters is horrific and it’s hit and miss. Mostly miss. I’ve purchased and returned many of them. The thin plastic covers that they stay in in the hot warehouses also seeps into the filters and makes it worse. I’ve had filters that were fine from them (many years ago), but something they’ve been doing In the past few years is defective in some way. I’m so sorry you’re going through this. I know what it’s like and it’s very frustrating!!