I have asthma.
Even in a clean or dirty house or environment.
It just is.
It has nothing to do, with what your Mom says.
Asthma, can and is exacerbated and made worse by cold weather and cold air.
Also, doing overly exerted activities, can trigger it, too. In warm or cold weather.
Your Mom... is WRONG.
Do not make the house colder... because of your Mom's reasoning. She does NOT know, about Asthma.
AT all.
If you listen to your Mom... your son will get worse.
And, I hope you are giving him his inhalers/medicine, that is per the Doctor??? This is very important for his lung-health.
ESPECIALLY when he is having an Asthma attack.
You best learn about Asthma.... people die from it.
It is a life long, lung condition.... and you should only listen to your Pediatrician.
all the best,
Susan