The smell of semen is 84 disinfectant smell, the main consideration is related to long-term non-excretion of semen, inflammatory effects, tumor disease and other factors. 1. Long-term non-excretion of semen: long-term no sexual life, or masturbation, resulting in long-term retention of semen in the body, the phenomenon of semen odor may occur. 2. Inflammatory effects: semen is mainly composed of spermatozoa and seminal plasma, while seminal plasma contains prostate fluid, seminal vesicle fluid and other gonadal secretions. If the prostate gland, seminal vesicle gland inflammation, can lead to gonadal liquid mixed inflammatory secretion, after mixing sperm, can lead to semen odor. 3. Tumor disease: such as prostate cancer and other diseases, may also lead to prostate fluid and other gonadal secretions abnormal, and lead to semen odor. In addition to this, the semen is 84 disinfectant flavor, but also may be related to other causes. It is important to pay attention and seek medical attention as soon as possible.