 Different modes of condom failure result in different levels of semen exposure . If a failure occurs during application , the damaged condom may be disposed of and a new condom applied before intercourse begins – such failures generally pose no risk to the user . One study found that semen exposure from a broken condom was about half that of unprotected intercourse ; semen exposure from a slipped condom was about one @-@ fifth that of unprotected intercourse . 
