What if I was exposed to particulate matter and it has caused asthma?
You would qualify if you were in contact with particulate matter or large burn pits in Iraq, Afghanistan, and Djibouti in the Horn of Africa, for example.
It might have also been toxic soil, can I qualify for that as well?
Yes if you have illnesses or other conditions that were caused by these environmentally toxic chemicals in the air, water, or soil.