Will Using Of Inhalers For Asthma Affect Sperm Count, Ability For Pregnancy

Good day Doc, im mariel. I had a live in partner for 3 yrs and we had no child.. He has this asthma when he was 25 yrs old until now that he's going 33. In those years he is using corticosteroid and prednisone at first and then a mild inhaler. But later, he was prescribed a stronger inhaler and he is just using this inhaler if the attack is creeping him. Now, can i ask if this inhalers that he's been using is affecting his ability to get me pregnant or is this affecting his sperm count.. ? Thank you and i'll wait for your response..