Joy is contagious

Sometimes people par their emotions and feelings with other on purpose and sometimes they simply infect other people with all those feelings they have the disaster it is when people infect others with their negative emotions, but it is great in case they share their positive emotions and feelings with other people. And joy is an extremely contagious emotion and it always infects people around those that are bright and joyful. Sometimes you are walking along the street all alone and you are sad and frustrated with all those thoughts you have. But, there is a person or the people that are bright and happy and they are laughing at something. You see those people ad you stare those because you wonder about what they are laughing at, though, no matter how long you are staring the you will barely realize the reason for that joy, though you are already infected with the joy of those people. You watching them and you are smiling now and with that smile some nice and bright feelings and emotions come to you. So, joy is contagious and I think it is great. Such “diseases” must be contagious.