 Hi everyone, Dr. Saul here in Beverly Hills. Today we're testing out PPEs to see which is more effective against blowing out this candle. Putting on a regular mask, which they sell a lot of. Let's see how this does. Passes the test. This is the gold standard, the N95 mask. This one I'm very sure of that it passes it. Here we go. Definitely, definitely works. This is a fabric mask, which you see a lot of people wearing. Let's see how that works. Although this doesn't have a filter, will you have washed it daily? Works well. Now the one that I spent the most money on, the copper fit. Watch this. How simple was that?