I wouldn't do it unless it was absolutely necessary, because I get claustrophobic when breathing into one. When my brother was in isolation and stepmom and I had to gown/glove/mask up to see him, it was incredibly hard for me physically, because of the feeling I was drowning. (and seeing my brother so sick and knocked out and on the respirator)
But people in Asia do it all the time, and who is to say they are wrong?