In these dark days of a Pandemic, better to use masks.
These types of masks are medical masks and usually are used in hospitals, but in this emergency period, these masks must be worn by the population when they are in contact with other people such as in supermarkets, pharmacies, public transport, work, etc… You need to wear these masks to protect yourself from possible contamination and others from you. These masks are used to protect you and to contain the spread of the Pandemic. It is important to always use this mask when you are “close” to other people and replace the mask after 24 hours of total use (for total use we mean the hours you’ve worn the mask).
Never buy masks without quality certification, be sure the quality is good enough to protect you and others.