I used to be the safety officer at a previous job, so I like to believe I am somewhat well versed in chemical safety.  I have worked with some nasty reagents over the years in research and industry so I definitely appreciate safety products, especially in my own home.  I purchased this for painting with spray guns, mostly water based, but just because something is water based does not intrinsically  make it safe (read some of the MSDS sheets for the water based stuff and I suspect you may agree).  Since I also occasionally spray pesticides, it would help with that task, too.