Welcome to Healthcare Magic and thank you for writing to us.
It is possible that thatch and asthma
doesn't mix, but the important thing here is that your asthma medications need to be reviewed as they do not seem optimal. Viral infections can exacerbate asthma, and if you are prone for allergies, then it gets slightly more difficult to keep it under control.
You will need allergy tests
(blood tests or skin prick tests) to see if you have allergies to house dust mite, pollens, animal dander, fungal elements to correctly identify the cause of such asthma flare ups.
You can take cetirizine
10mg or fexofenadine
180mg to lower some of the upper airway swelling/redness; a Chest X Ray
to see if there is any patch of lung that is still infected, and a full asthma review.
I hope that was useful.