Quite a few years ago now, I want to say 2018, my eldest son was having trouble with his breathing and was making weird hiccup noises often. 

Being worried about it I took him to the doctor and the doctor said we should go straight to the hospital and that we could not leave the doctor's surgery without either a taxi or someone we knew with a car taking us there.

We spent over 6 hours in the hospital for them to find out he has asthma due to allergies. We later found out that he has a dust allergy, cat allergy (only with certain fur types) and also allergies such as hayfever tend to kick if off as well. 

I myself don't suffer with dust allergies but I do tend to ensure that everywhere is dust-free as best I can now due to my eldest.