I have always been doubtful of face masks in general. Even if you have one that is form fitting, and allows little to nothing in, how long will those filter cartridges be effective? How do you know they are filtering properly?
I saw an interesting interview with a doctor from Toronto discussing the Corona virus. When he was questioned about face masks he said they really do very little. They are to loose, and air can get through on every side. He said where they are effective is keeping you from touching your face, especially around your nose and mouth. In his opinion there is a higher likelihood of you touching something that is contaminated; then touching your face. You ingest the contamination.
I guess they are better than nothing, but I wouldn't spend a lot of time and money thinking they will protect you.
This post has really been focused on viruses, but a face mask will NOT protect you from radiation. some had mentioned using one in a Nuclear event. It will protect you from particulate, not radiation.
I saw an interesting interview with a doctor from Toronto discussing the Corona virus. When he was questioned about face masks he said they really do very little. They are to loose, and air can get through on every side. He said where they are effective is keeping you from touching your face, especially around your nose and mouth. In his opinion there is a higher likelihood of you touching something that is contaminated; then touching your face. You ingest the contamination.
I guess they are better than nothing, but I wouldn't spend a lot of time and money thinking they will protect you.
This post has really been focused on viruses, but a face mask will NOT protect you from radiation. some had mentioned using one in a Nuclear event. It will protect you from particulate, not radiation.