reek - give off smoke, fumes, warm vapour, steam, etc.; Marshes reeking in the sun give out, emit, give off - give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.; The ozone layer blocks some harmful rays which the sun emits
An average human ejaculate contains about 180 million sperm (66 million/ml), but some ejaculates contain as many as 400 million sperm. Both quantity and quality of the sperm are important determinants of fertility. A man is considered clinically infertile if his sperm concentration falls below 20 million/ml semen.
Usually the capability to ejaculate semen comes about one to two years after puberty starts -- often about the time pubic hair begins to grow and a boy begins his growth spurt. The average age for starting puberty is 11 1/2. This makes the average age to ejaculating semen around the age of 13. But this is only an average. Puberty in boys is considered normal if it starts as early as 9 or as late as 16. Hence, some boys, even though they are normal, will not gain the ability to ejaculate until they are nearly 18 years of age or they may start as soon as 10. Usually when a boy begins to develop too early, it is an indication of problem.