Haze problem - Transform surgical mask into N95 type respirator

This post is for transforming a surgical mask into a N95 type respirator yourself during a period of haze. During a period of haze it is sometimes hard to find N95 type respirators because they have been sold out, not so readily available at the pharmacies or more expensive than the the normal surgical mask.

The normal surgical masks would have some filtration power against airborne particles, although perhaps not as high as the N95.  It's primary function is to block off liquid droplets from getting to you or the person in front of you. The biggest problem a surgical mask cannot be used like a N95 respirator is because it does not seal to the face of the wearer. i.e air is sucked in through the gaps between the mask and the wearer's face (mostly around the cheek bone area).

While observing the surgical masks in action on myself and my friends during the last haze period, I have come out with this simple DIY design modification that lets the the surgical mask sit tightly on the face and seals perhaps as tightly as a N95 respirator. It requires only 2 staples at both ends. I think apart from being cheap it has some design advantage over the N95 respirator as the fit can be adjusted yourself and it would fit a thin face or a small face like a child's better than the bulkier N95. Being of softer material than the N95 it can curve better and hugs the contour of a person's face better. The recommended angle below could be made smaller for smaller faces.