Semen
Semen that does not have any germs in it (see below) is not harmful if it is swallowed. That is common when a person has oral sex with a man and the man ejaculates in that person's mouth. Some partners are happy to swallow semen. Others prefer not to. Semen usually has a slight smell of chlorine and ammonia. Some people say semen tastes sweeter if the man eats a lot of fruit. Scientists have not proved this. Smoking, or drinking coffee, tea or colas that contain caffeine can create a bitter flavor. Semen is slimy when wet. Eventually, it dries in the air and hardens like glue. Although semen is not poisonous, it is very bad if it gets in an eye. The enzymes semen contains to penetrate the egg in a female will also attack the eye. Be careful not to ejaculate into your eye or your partner's eye. If it happens, wash the eye well with warm water.