[Neomed] Fine Dust Anti-Pollution Mask, [White] 5 Layer Adjustable Washable Mesh Respirator Face Mask for Fine Dust Particles - Perfect for City Cycling, Jogging, Allergies, Pollen and More!

I have severe multiple chemical sensitivity. I tried this as I cannot get replacement filters for my U mask. The filters are only good for an hour or so. It is extremely hard to breathe through it. I rarely wear more than an hour at a time and usually much less but it seems like within 30 to 45 minutes, odors are coming through. Might be good for dust but not much else.