With a global shortage of face masks, Lanaco has been using their wool-based air filter technology to manufacture millions of masks quickly over the last couple of weeks. The wool comes from a specially bred sheep, which has a high electrostatic charge that attracts particles towards the filter and allows air to flow through.
Read more here: https://www.stuff.co.nz/business/119759842/cactus-outdoor-launches-wool-face-mask-amid-global-shortage