 [ Symptoms ] can oral sex cause a uti  i always get a uti and its weird to me because im a very clean person when it comes down to intercourse [ Disease ] condoms are sheaths designed to fit tightly over an erect penis their role is to prevent semen from entering the vagina condoms are made of rubber latex synthetic materials often polyurethane or natural skin from animals like lambs latex and synthetic condoms are better at protecting against sexually transmitted diseases why because natural skin condoms have tiny pores that may permit the passage of viruses