Hi , my girlfriend has been complaining that my semen has a foul taste to it. We ve been together 4 1/2 years and she used to complain about the taste but says it s much worse now. She thought smoking could have been the cause of the bad taste but I quit smoking about a month ago and she says it tastes worse now. I ve been taking chantix and was wondering if that may be causing the bad taste. What else could be the cause?