One thing often missed with the mask story is that they (generally) stop you touching your mouth and face as frequently. Assuming touching your mouth with a 'di

One thing often missed with the mask story is that they (generally) stop you touching your mouth and face as frequently. Assuming touching your mouth with a 'dirty' hand is a major infection vector, then a home made mask would indeed be of some use. Hong Kong scientists also developed and tested a few home made designs, make of them what you will. https://www.scmp.com/news/hong-kong/health-environment/article/3050689/how-make-your-own-mask-hong-kong-scientists https://www.scmp.com/news/hong-kong/health-environment/artic...