Condoms are a necessity for both sexes, but there are also people who do not want to wear condoms. Because there seems to be no barrier to wearing condoms, today's men and women who yearn for "sexual happiness" introduced 7 sexual contraceptive methods that do not require condoms. Method 1: Electric shock contraception American medical scientists are determined to put tiny electric shock contraceptives into the uterus, and as the sperm passes, the low electric field released kills the sperm. Method 2: Olfactory contraception Sweden and the United States have cooperated to make a unique aerosol olfactory contraceptive, which is fragrant and sweet, and the sperm and eggs of the handsome man and woman have died while admiring the "flowers" and smelling the "fragrance". Method 3: Bra contraceptive method The flash contraceptive bra studied in the UK can be placed in a microelectronic system to predict the day of ovulation according to the change of human b...