yea, their is a need to prevent contracting corona.

Thanks Usama sir your valuable suggestion.

Ales Kralj sir thanks for a logical answer put vividly. But I feel more irritation and urge to touch mouth and nose when I put a mask. So shall I conclude that there is no need to put on mask while going in public spaces.

as recommended, only sick people should wear masks.physiology of breathing can only force greater respiratory resistance in healthy people as well as result in a decrease in the filter's filtration values