What's the correlation btw smoking and the risk of dying from covid19?

I'm not a health professional. Smoking negatively affects your lungs and thus your ability to breathe efficiently.

This webpage... https://www.webmd.com/lung/news/20200310/know-the-symptoms-o... ...contains this information... COVID-19 is a lower respiratory tract infection, which means that most of the symptoms are felt in the chest and lungs.

I'm also curious + exposure to heavy pollution