After watching the " Sharks:" TV program on the invertor that created the nasal filter. Has thousands of uses and I decided to look it up Sharks liked it and bought into it but as I looked at the name I found other nasal filters that I did not know have already been aroung This is a great idea, especially for my wife who is alergic to cats. This could solve a BIG problem when visiting Son. Has anyone used nasal filters or have experience with then in the wood shop

PaPa Jack