Can Condoms Cause Infections? Understanding the Link Happy V Allergic to Condom: Latex, Spermicide, Symptoms, and More Some condom and lubricant brands contain toxic chemicals that may cause infertility and cancer. Condoms are a common method of contraception and protection against sexually transmitted infections (STIs). They are made of Condoms protect against unplanned pregnancy and most sexually transmitted infections, including HIV, gonorrhoea, chlamydia, and syphilis. Use only water or silicone based lubricant with a condom during vaginal and particularly anal sex