Conclusion
CBD has not been totally verified and an effective treatment for COPD. It is important that you visit your doctor if you notice any signs of COPD. Your doctor will also let you know if to use CBD as a treatment and the method of usage that is best for you.
References;
[1] https://silver-therapeutics.com/what-is-thc-oil/
[2] https://www.mayoclinic.org/diseases-conditions/copd/symptoms-causes/syc-20353679
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5072387/
[4] https://my.clevelandclinic.org/health/diseases/4108-diarrhea