The Indian Institute of Technology (IIT), Kanpur, has developed a elastomeric film that has multiple uses. Developed by Dr Tushar Deshpande, who has done doctorate in chemical engineering, the film can be used as a bandage to prevent a wound from getting infected. It will also speed up healing by aiding tissue building around the wound. It allows air to pass but no virus.

source https://www.indiatvnews.com/lifestyle/news-iit-k-develops-new-micro-porous-film-630787