I have deliberately stayed out of the mask debate until now, preferring to do my own research. To date this is what the information I have gathered. There is a huge difference in masks depending on what kind you are using.
N95 Masks are designed for contaminated environments. These masks are vented to breathe straight out without any filtration. They do not filter the air on the way out, they aren't designed to do so. These masks do not protect persons you come into contact with.
Surgical Masks are designed for Sterile environments. These masks are quickly clogged due to the amount of particles and contaminants in the indoor/outdoor environments. The moisture of your breath combined with a clogged mask render it useless and if you come in contact with Covid19 the mask traps it. These masks should be changed every 20-30 minutes in non sterile environments.
Cloth Masks do not filter anything. When you exhale, you rid your lungs of contaminants and carbon dioxide. Cloth masks can trap the carbon dioxide. The moisture caught in this type of mask can become mildew ridden overnight. Dry coughing, enhanced allergies and sore throat are all symptoms of micro-mold in your mask.
The CDC wants us to wear masks. OSHA is the top American organization for safety and they regulate everything from Asbestos to Surgical rooms. IF you are required to wear a mask, OSHA requires your employer to verify you are receiving a minimum of 19.5% oxygen level by law. If you experience headaches or dizziness your oxygen level could very well be too low.
Just sharing the information I have learned for with all so that you can make informed decisions to wear or not to wear masks.