Well we do have a decent source for fibres in the form of Hemp. The Hemp fibre is longer and stronger than a cotton fibre, but the political favours pulled by the US Cotton growers association in the past has indirectly helped to bring man made fibres like these into play as a cheap alternative source for clothing and covers.
This issue, isnt restricted to clothing made of man made fibres, it will affect the leisure industry because tents & gazebo's are made of nylon and their exposure to the elements degrades them quickly. Footwear, trainers, sneakers watch how the likes of Nike handle this both for consumers and their employees.
Man made fibre's are everywhere and are the next Asbestos scandal, so watch how big business handles this one. The science will be restricted, there might be some private studies commissioned by some big names and the findings kept quiet. I've seen stock market listed supermarkets commission studies, results come back and it all gets hushed up!
A lot of Global businesses should best be viewed as a threat to your health!
Your politicians wont do anything about it either, they dont represent you they represent their unlined pockets!