@naffie Welcome to Mayo Connect. We are a community of people exploring our health issues and helping each other, but most of us are not medical professionals, so we can share our experiences, offer opinions, or point you to specific information, but we don't really give health care advice.
The question about your oxygen concentrator probably should be addressed to your health care provider or the respiratory equipment provider. My sense is that it will help keep you more comfortable if you develop the virus, but if you get severe respiratory symptoms or pneumonia, you will likely need more care. In any case, with your lung disease, any evidence that you have the virus - fever, dry cough (more than your normal cough), additional shortness of breath, pain when breathing... should be reported to your provider immediately for advice.
Your best chance for staying healthy right now is self-quarantine, relentless hand washing, cleaning any and distance from anyone who may have been exposed to the virus.
Are you able to stay safe and have someone bring you what you need?
Sue