A metro Atlanta emergency room doctor is doing what he can to keep himself and those he works with safe from COVID 19.

Dr. Mehrdod Ehteshami has already had to treat patients with the virus and is worried the limited supply of personal protection equipment will soon run out. So, he’s taken a MacGyver approach to keeping his N95 mask functional as long as possible.

“I actually went to a home improvement store and bought some air filters that apparently are able to block against viruses down to .3 microns, which is about what I need for the COVID 19,” he tells WSB’s Sandra Parrish.

Ehteshami then cuts the filter in the shape of the cartridge inside the mask and replaces it.

He says it’s what he will be using in the event the masks at the hospital where he works runs out.

“We still have, at my hospital, N95s but we are definitely dwindling,” says Ehteshami.

He has a group of friends who are also making fabric masks with pockets where the filter can be placed with the goal of having enough for his staff too.

And Ehteshami is not stopping there when it comes to shortages of other PPE.

“I can reuse my goggles by just cleaning them with the 60 percent alcohol wipes that we have left,” he says, adding, “The PPE with the gowns and gloves and shoe covers are more of a problem. We’re just doing the best we can. We’re not out yet… but I’m trying to think about how to fix that problem as well.”