No
an std
No
Yes, any STD can be transferred.
Yes - PID is a serious condition caused by an untreated STD.
NOTICE
Most STD's are caused by Bacteria. To give a few examples: Syphilis, Gonorrhea, Chlamydia... (etc)
Condoms are used on male penis to prevent pregnancy and STD transmission
One lifestyle that can give you cancer is getting the STD called HPV.
The short answer is NO as long as both participants are healthy with no STD's! The more complete answer would include: There is nothing harmful in the ejaculate of a healthy male but a male infected with STD's could pass those along to the partner. If either the male or the female has a Sexually Transmitted Disease (STD & Including HIV/AIDS), that disease can be transmitted. Some STD's can be easily treated with Antibiotics others can be DEADLY. Syphilis, Gonorrhea, chlamydia, Herpes, AIDS/HIV, genital warts, Hepatitis-b are all STD's & some can kill you others are treatable, Condoms area good line of defense for most diseases but they too can fail.
Anything from an STD to a luxury yacht. He could give her happnest if she just give him a chance.
No, but it could give you an STD.