I can understand those concerns. People I worked with used to give me some guff about always wearing a respirator when, really, they should have been too. You

I can understand those concerns. People I worked with used to give me some guff about always wearing a respirator when, really, they should have been too. You really should be able to figure out pretty quickly all on your own if you need one and if it's working or not. But... you're right, and my own experience mentioned above confirms that.