Mona mask ekakin wath corona nawaththanna ba.
Corona Size eka 0.12
3ply/N95 mask walin filter karanne 0.3 wada loku ewa.
Kela wisiwena eka witharai nawathinne.
a nisa redi mask ekak athi,
hodama de muna allanna epa.
True...But as you said, it's better than having nothing - at least the droplet transmission gets minimised.
Note that there are masks that provide protection against Coronavirus. I have written about it in a different thread. It's Israeil origin, developed recently and now given 10,000 samples to Israeil hospitals and also some to Singapore.
These are to be sold around $50.00 but not marketed yet until mass produced.
Manufactured by Sonovia -
Sonovia developed an almost-permanent, using ultrasonic fabric-finishing technology for mechanical impregnation of zinc oxide nanoparticles into textiles.
The technology is based upon a physical phenomenon called cavitation. Sound waves are used to physically infuse desired chemicals onto the structure area of materials, enhancing them with clinically proven antiviral and antibacterial properties.
These fabrics impregnated with the zinc and copper oxides were shown to retain significant antibacterial activity even after 100 wash cycles at 75 degrees Celsius or 65 wash cycles at 92 degrees Celsius.
The same fabric can be used to make clinical robes as well.
කල දුටු කල වල ඉහ ගන්න පරයි නෙ ලංකාවෙ ඉන්නෙ.....!! 
