The Homemade Laminar Flow Hood. Don't bother?

Having a Flowhood is mostly a Vanity Project. Using a clear plastic bag with a squirt of antibac spray (if you can spare it), and work from the outside, no clean area needed and just chuck the bag or use it again? If you succeed several times with the bag method, you wont think a flowhood is important anymore. Buy some diffrent crap with the money you saved ........Like toilet paper, that seems really popular these days? :)
Even more better https://www.youtube.com/watch?v=5zfUVYuVP0c&t=12s

Видео The Homemade Laminar Flow Hood. Don't bother? канала Shaun Hughes Engraving