I removed all carpeting in my house. A few years ago I had asthma caused by the stress of coughing so much because of nasal problems. I took me about 5 years to get rid of it and I have to be very careful not to get into a situation that makes me sneeze.
It was a terrible feeling to be gasping for air. Which, by the way, suffocating is my greatest fear. So I try to stay clear of chemicals, dust, etc.
I did not know about the microfiber particles getting into water system though. It does make sense.
Yes apparently many Fleeces are apparently made from recycled plastics such as cassette and CD cases among other things, and they shed tiny micro fibres. Many people now advocate only washing them once when you first get them then just sponging any future marks and stains off the garment.