You might want to be careful about this. A week or so ago, but local car wash’s air blowers took the hood off my ‘08. I was fiddling with my phone and didn’t notice. Having experienced this before, I had attached a second retaining strap so the good didn’t drag on the ground, but the loss in air flow across the radiator caused my smart to get very close to overheating. I have an UltraGuage that gave me an alert. Since the smart doesn’t have a native temperature gauge, I would not attempt putting a mask on your car unless you have an aftermarket temp gauge installed.