Save your breath.
Back when our video games came in cartridges...
Source: media.photobucket.com
...we would blow into them if they didn't work.
Source: nintendolife.com
But it turns out blowing into a Nintendo cartridge doesn't actually help.
Source: playcloths.com
See, we thought we were blowing off dust, when in fact we were just lining the cartridge with a layer of moisture.
Source: videogameconsolelibrary.com