Because the rainbow flag symbolizes the equal rights of the same sex, fortunately, the present society is more open and tolerant, and many people can accept it. Generally speaking, anyone who is gay is a high probability event. After all, the world is so big, there must be homosexuals. I've seen it online before. I know many homosexuals will vomit, drink and get angry because of careless friends. Generally, they can find out whether there is AIDS in pharmacies, and sometimes they use saliva to check AIDS.