Hello @melaniego and welcome to Mayo Clinic Connect. I wanted to more quickly connect you with other members who may be able to provide you with some support by way of their experience in choosing a nebulizer so you will notice that I have moved your post into an existing discussion which you can find here:
- What helps post COVID shortness of breath?: https://connect.mayoclinic.org/discussion/hydrochlaquid/

Members like @dvierheller @gillysmom and @sueinmn may be able to help support you.

I wonder if you've inquired with your doctor to see if there is a non-plastic, medical grade nebulizer he/she would be able to prescribe based on your symptoms?

if you are wanting a nebulizer for your LUNGS that will dispense your albuterol then i recommend a compressor nebulizer- by phillips respironics it uses a latex free tube and mouth peace. Ombra has one as well . Ombra® 120V Table Top Nebulizer Compressor System.

I'm sorry to report that I am not familiar with any nebulizer that does not use plastic - in the mouthpiece or tubing. You might try contacting the respiratory therapy department of a hospital to see if such an item exists, although even hospitals use disposable medical grade plastic tubing and mouthpieces or masks.
Sue