They have devices for that. You cn get them in a bag that fits on a Keychain. It unfolds into a plastic mask with a one way valve to prevent you getting spitback.
Everyone who has ever learned CPR probably knows this.
They have devices for that. You cn get them in a bag that fits on a Keychain. It unfolds into a plastic mask with a one way valve to prevent you getting spitback.
Everyone who has ever learned CPR probably knows this.
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