Wheezing in asthmatics during sex may be caused by the activity itself (similar to how exercise induces asthma), allergy to latex condoms or, in a few cases, human seminal plasma allergy. It can also be an indication that your asthma is poorly controlled. You are not the only who reported this problem. In the Reducing Emergency Asthma Care In Harlem Project, researchers found that sex ranked as the third most important limitation reported by asthma patients. Asthma that is experienced during a sexual activity can be prevented by taking asthma medication before sex. It is best that you bring this problem up to your doctor in your next visit so that he or she can check again if you’re getting proper treatment.