Yes.. But just feel healthy.. And remind yourself more often that You're healthy..

A good mood will help make people fight those virus I guess.

Actually, research has shown that laughter strengthens the body's immune system, and therefore makes it easier to fight disease.

good mood helps your health, whereas bad mood spoils it. Though I think we need health just right to be in good mood and feel happy.

No ! smile cannot improve health ! sometimes it can but in other cases i cannot !