Bouquet balloons in sons room 45 min door closed then removed from house. I went upstairs 3 hrs later had terrible asthma attack worrisome?

May be. You don't mention what was in the bouquet nor how well your asthma is usually controlled. What exactly you mean by "terrible asthma attack"? You don't tell me what medication you are taking. You should go to www.Aaaai.Org or nationaljewish.Org, or nhlbi.Nih.Gov to learn more about asthma, how severity is defined andd what good control consists of. You also may want to see an asthma specialist.