There is a scarf on the market now that effectively filters 99.75% of particles over 0.1 microns. The Bioscarf uses no gadgets or technology to filter toxic particles and can be washed over 100 times without losing efficacy.
Created by a couple after a visit to China to protect against air pollution, the Bioscarf is made entirely from post-consumer recycled products.
Learn more about the Bioscarf at https://www.goodnewsnetwork.org/bioscarf-filters-the-air-around-you/