I have mild persistent asthma, for example, which for me means if I take a daily (low) dose of an inhaled corticosteroid, I can generally go about my business like a normal person and almost never need to use my rescue inhaler.
I've only seen stats for COVID-19 fatalities for people with "respiratory conditions." Which could be anything from mild asthma on up to stuff like emphysema and cystic fibrosis.