he rapid spread of coronavirus has created an increasing demand for face masks. While the KN95 or N95 mask are highly effective to stop the spread and prevent people these are meant for first responders and health workers. So what is the option for a common man? The World Health Organisation has issued guidelines for a non-surgical mask or the cotton mask that can be used by every individual in order to get the utmost protection. As per their criteria, an ideal mask would be one which has at least three layers :